Who are Social Media Influencers? A Complete Guide in 2025

June 30, 2025
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July 11, 2025
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12 min
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Agustina Vinograd
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Peter Nettesheim
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Who are Social Media Influencers? A Complete Guide in 2025

Following influencers is now one of the primary ways people consume content on platforms like Instagram, TikTok, and YouTube. According to PEW Research Center, four out of ten adults in the U.S. follow at least one influencer and 75% of them have made a purchase based on a creator’s recommendation.

That’s the power of influencer marketing: content creators are not just entertainers, they are trusted sources for product discovery and lifestyle inspiration. Their authentic voices and niche appeal often make them more persuasive than traditional advertising channels.

In industries like beauty, fashion, health & wellness, and tech, influencer collaborations have become key drivers of consumer behavior and brand loyalty. They offer subtle yet impactful ways to connect emotionally with audiences, increase brand awareness, and boost ROI.

As part of a modern digital marketing strategy, evaluating the strategic fit between your brand and the influencers you partner with is essential. From analyzing content quality to audience demographics and engagement metrics, the right partnerships can keep your brand top of mind and top of feed.

What Is a Social Media Influencer?

Influencers are people who create, edit and post content (videos, pictures, audio, etc) on social media platforms like Instagram, TikTok, Youtube and more. They post regular content, meaning that over time they have established a growing audience who follow the influencer in a parasocial relationship. 

This relationship between the influencer and their audience is characterized for their credibility  and audience trust.  

What makes them powerful is their capacity to reach large amounts of possible customers by influencing purchasing decisions, fashions and communism trends through their content and personalized recommendations. By learning about social media, they have developed a  niche expertise on how these platforms function to algorithmically push content to viewers.

Why You Should Perform an Influencer Audit

The most important thing to note is that working with unreliable influencers can significantly impact your campaign’s ROI. Artificially inflating key metrics that don’t reflect real connections or results with your products is one of the main factors that negatively impact ROI in influencer marketing. Here you can read our investigation about how key metrics impact ROI in a negative way.

In other terms, partnering with these influencers can ultimately result in lower-than-expected engagement metrics and interaction with the brand. As a consequence, both the brand’s and the influencer’s credibility ends up compromised. 

For this reason, conducting a fake follower audit is especially important for businesses and marketers who rely on authentic engagement and want to ensure that their influencer campaigns are truly worth the investment. 

Moreover, working with trustworthy influencers gives you more reliable results for monitoring and reporting, and helps build a long-term growth marketing strategy from genuine metrics.

Types of Social Media Influencers and Which One is Right for our Brand 

Nano influencers (1K–10K followers) have very high engagement and strong authenticity. Their hyper-niche reach makes them ideal for driving conversions and community engagement. They typically work for free products or low fees, but content quality can be limited due to lack of experience.

Micro influencers (10K–100K) offer high engagement and a good balance between reach and trust. They’re affordable, produce solid content, and are great for building brand loyalty and driving sales.

Macro influencers (100K–500K) provide wider exposure and high-quality content. Engagement is moderate, and costs range from $500 to $10,000 per post. They work well for campaigns focused on visibility and professional content.

Mega influencers (500K–1M) offer big reach but lower engagement and authenticity. They charge $5,000 to $50,000+ per post and are best for boosting brand awareness with polished, broad-appeal content.

Celebrities (1M+) bring massive visibility but the lowest engagement. Their high rates, often $50,000 or more, are suited for large-scale campaigns focused on positioning and reach rather than interaction.

Category Nano (1K - 10K) Micro (10K - 100K) Macro (100K - 500K) Mega (500K - 1M) Celebrities (1M+)
Engagement Very High High Moderate but balanced Lower Low engagement rate
Reach Hyper-niche
Great for targeted reach
High Big exposure Massive reach Massive reach
Authenticity Very High High Medium Medium to Low Low
Cost per Post Low cost – Free products or $10 - $100 Affordable – $100 - $1,000 $500 - $10,000 $5,000 - $50,000+ Premium pricing – $50,000+
Content Quality Lower due to limited experience Moderate High More polished content High-quality content
Best For Conversions or Community Engagement Conversions, Brand Loyalty and Trust Reach and Content Reach, Visibility and Content Positioning

Nano-Influencers Pros and Cons:

  • Extremely high engagement rates.
  • Highly authentic and trusted by their small, loyal following.
  • Cost-effective for brands with limited budgets. May even accept free gifting partnerships.
  • They have limited reach.
  • The content might be less polished due to limited experience and resources.
  • Best for: Hyper-targeted or local campaigns and brands entering new/niche markets.

Micro-Influencers Pros and Cons:

  • High engagement with still-authentic feel.
  • Good content quality.
  • Cost-effective vs. larger influencers.
  • Not as much reaching as macro/mega influencers.
  • Best for:  Niche product launches or brands seeking trust & visibility.

Macro-Influencers Pros and Cons:

  •  Strong reach.
  •  High production quality.
  • Recognizable presence.
  • Engagement tends to drop with scale.
  • Higher cost per post.
  • Best for: National campaigns and products with wide appeal.

Mega-Influencers Pros and Cons:

  • Large audience size.
  • Professional, polished content.
  • Expensive.
  • Lower perceived authenticity.
  • Best for:  Broad market pushes and trend-setting campaigns.

Celebrities Pros and Cons:

  • Maximum exposure.
  • Association with high status.
  • Very high cost.
  • Low engagement and authenticity.
  • Best for: Global campaigns and prestige brand partnerships.

Examples of Social Media Influencers

1. @Jack_Edwards on TikTok

Jack Edwards uses TikTok as his main social platform but he also has a Youtube and an Instagram. With over 742K Followers (which makes him a mega-influencer to partner with) he posts videos in the category of Booktok, a niche community on TikTok centered around reading.

2. @Jenafrumes on Instagram

Jena Frumes is a model that posts different things of her daily life on Instagram, like makeup, food or family. Currently, she has over 5M followers, which categorizes her as a celebrity. This means she will have an amazing reach, but not as good engagement or authenticity. 

3. @KimJimenez on Youtube

Kimberly Ann Jimenez is a youtuber who posts videos once a month talking and teaching about business and marketing tactics. She’s recentlyhit 85K subscribers, which means she’s a Micro Influencer. Here you can see an example of a specific niche to target depending on your brand.

What is Influencer Marketing

As we explain more in-depth in this Ultimate Influencer Marketing Guide, Influencer Marketing is a new marketing strategy that originates from the rise of digital and strong personalities online. In Influencer marketing, brands partner with content creators who have strong audiences on their social media to connect with a certain type of consumers.

Why Use Social Media Influencers for Marketing?

 High Engagement And Trust vs. Traditional Ads

While traditional ads can be useful depending on the format and type of product and audience you want to reach, by involving influencers in your marketing campaigns you can start a different type of connection with the audience in a more genuine and personalized way. According to SproutSocial, this is because consumers prefer honest and unbiased content, making them more likely to engage with influencer content by 67%.

Access To Niche And Loyal Communities

Choosing influencers who specialize about specific topics can enable your brand to reach niche audiences who will value your product on a more personal level. As we’ll se below, micro influencers generate high engagement with their niche audiences. 

Cost-Effective Campaigns With Measurable ROI

While traditional advertising needs high investment with little-to-no immediate return on the short run, influencer marketing campaigns do not represent significant costs for companies, making it a perfect option for small and starting brands, marketers and niche products and services. Currenltly, 26% of marketing agencies and brands allocate more than 40% of their marketing budgets to influencer partnerships. This is because businesses earn an average of $6.50 for every $1 spent on influencer marketing; the top 13% see returns of $20 or more.

Boost In Brand Awareness And Credibility

By interacting online and impulsing creative content that relates to your brand, you are showing versatility, modernity and genuinity. All of those factors position the brand with an overall good sentiment and top-of-mind. 

UGC Value For Repurposing

By asking influencers to generate content for your brand, you have an immediate mediator between your brand and possible customers. This mediator personalizes the experience of shopping in a way that directly speaks to your desired audience. This content later can be utilized in your own social media, or for paid advertising. This is because 93% of marketers report that user-generated content (UGC) performs better than traditional branded content.

Why Is Social Media Marketing Beneficial for Brands 

Influencers are a great way of connecting potential consumers to brands without the need to invest large amounts of budget into traditional advertising. Even with no budget at all, brands can create gifting or affiliate campaigns that help achieve two main objectives of influencer marketing: brand awareness and conversions.

With influencers creating branded content on demand, there is a synergy where the brand receives several valuable elements at once: varied and high-quality content from professional creators, constant communication and visibility with their audiences, and genuine connections.

It’s not only about communicating your brand’s mission or benefits, but about building relationships within the industry that enhance your brand’s image and attract emotional connections with potential consumers. Brands need these elements to stand out and secure their space in the market and on social media platforms.

Collaboration Types & Campaign Models

Gifting / Barter

Sending a product as a form of payment in exchange for some content where the product is featured and reviewed.  This type of collaboration is usually done with small-sized influencers or to test the affinity with the brand as a first time collaboration. 

Make sure to clarify that you want content in return from the beginning, because  gifting does nos guarantee posting in most cases. This is usually called “No strings attached gifting”

Example: Heat Byron Bay Active Sportswear and @Bodyzonebyhelena

Affiliate / Commission-Based

The influencer is provided with a personalized link and/or a discount code and will receive a percentage of the sales they achieve through posting. They become an affiliate of the brand granting them between 10-20% of commissions and a discount to incentivize their following to purchase. 

In these cases, the link is substantial because it’s the key to track all sales and attribute them to that specific influencer.

Example: GymShark and @Masisieellenfitness

Paid Campaigns

You pay an influencer based on follower count and/or type of content you ask. All followers have a set of prices they can send you, but there’s plenty of ways to calculate and set a price that works for both parties. 

Generally, the market pays 10$ for every 1000 followers. But, as we mentioned recently, paying only by followers is not a good practice. There are different ways to calculate payment for influencers.

Example: Hello Fresh and @yomikez

Brand Ambassadorships

When an influencer becomes brand ambassador, they start representing your mission and values in a profound way. It’s a form of long-term relationship where the influencer advocates and shares the vision of your brand as a whole. 

This type of arrangement does not only promote a single product or a line of products. It amplifies and benefits both parties. 

Example: Cali Water and @Ddovato

Giveaways

An influencer is sent a selection of products, vouchers or discount codes to distribute through their followers in the form of a giveaway hosted on their profiles. Usually, the influencer will ask their interested followers to interact, follow and reshare a specific post announcing the giveaway to enter for a chance to win. 

This type of collaboration is a win-win, because it enhances reach and interaction for both the influencer, the brand and the collaboration. Want to know more about how to gain more than 50k followers with giveaways?

Example: Youtooz and @Ethannestor

Takeovers, Live Collabs or Co-Branded Content

A hybrid form of collaboration where the influencer either appears on the brand’s social media platforms, appears in a livestream or works with the interal team to create the content together. 

It’s a great way to make the brand’s presence online more informal and decontracturated by bringing fresh voices into your content. 

Example: Nike and @Serenawilliams

Whitelisting

With the influencer’s permission, they grant you access to their business accounts to run ads for your company through their profiles and with their own content. We’ve studied this can have many benefits,  like allowing  your brand to target new audiences that originally can’t be reached through your main social media channels.  

Example: Naturaint_usa and @Waterthruskin

Naturtint Ad

Where Influencers Live: Key Platforms for Brand Campaigns

When talking about social media influencers, take into account which social media they prefer as their main and as their secondary platform. This will give you key information regarding where to launch your Influencer marketing campaign. 

As we see, Instagram dominates the field of creators and marketers in 2025, as well as LinkedIn, TikTok and Youtube. Influencers usually have between two and four accounts where they post their content.

Influencer Pricing and How Much Brands Should Pay 

In case you are taking on a paid campaign, there are three major ways on the industry to calculate a fixed rate for an Influencer post. Of course, this will all depend on your brand’s set budget for the campaign. In case you need rates divided by platform and by influencer type, you can find additional information on our Influencer Pricing Guide

Independently of the market’s fees, with a small budget you can develop great relationships and deliver great results. 

By Influencer Size:

You pay a fixed fee based on the size of the influencer’s following. This is a factor that also helps determine other types of payment, but by using this method you need to be aware of the influencer’s full metrics and analytics to make sure that their following is organic and not fake. 

As said before, the base industry formula is to give 10$ for every 1000  followers. Of course, this gives you a based estimate because you will need to adjust based on analytics, niche, region and more. In these cases, it’s good to take into account follower count and match it with the type of post, CPM or other payment type. 

As shown in the table, Nano-Influencers usually cost between $10 and $100 per post. Micro-Influencers charge between $100 and $1,000, while medium-sized influencers can ask up to $1,000. Macro-Influencers range from $5,000 to $50,000, and those with over 1 million followers can charge more than $50,000.

By Type of Post:

You pay a fixed amount depending on the deliverable you ask. While a set of stories tend to be on the cheaper side, reels and long-format videos are one of the highest priced pieces on the market because of their qualities explained below. 

Generally, influencers offer different packages of posting options that combine different formats and social media platforms.

By paying a fixed fee for a specific post type, you can also negotiate and determine from the start if the fee you pay includes content usage for paid advertising or organic posting.

By CPM:

You pay a number based on the estimated or guaranteed impressions For this, we use this formula after the post performance to determine payment to the influencer:

Formula = (CPM rate × impressions) / 1,000

This will allow brands to pay exclusively for the reach and visibility the influencer provided. For more information on How to Calculate the CPM of your posts, here is this helpful article. 

Hybrid Payments:

Certainly, you can combine a lower based fee and match it with a gifted product, commissions and bonus based on performance after posting. 

This is a good method for small brands starting on the industry. With hybrid payments,  brands can motivate influencers to promote products in a more consistent and authentic way. 

How to Work with Social Media Influencers

  1. Define Your Goals And Campaign Type.
  2. Find And Select the Right Influencers.
  3. Budget.
  4. Set a Clear Brief.
  5. Negotiate Terms.
  6. Measure Results and Nurture Relationships.

1. Define Your Goals And Campaign Type.

Define the main key aspects to achieve. Based on this, you can choose the ideal type of influencer marketing campaign. If you’re interested in conversions, maybe suggest affiliate marketing, but if you’re only interested in awareness or content-creation you can opt by gifting or  giveaways or similar. This will also depend on your budget. 

Make sure that your goals are not isolated, but that they have a broader structure and are integrated into the general marketing strategy of your marketing department. 

2. Find the Right Influencers:

Not all influencers are a match towards your brand, neither good to partner. Take into account everything mentioned before and start looking for influencers. Need more advice on choosing the right influencers? We’ve got you covered.

For that, we recommend usign an online tool like Influencer Hero that helps with every part or process involved in an Influencer Marketing campaign. 

Inside Influencer Hero, you’ll have a database with over 16 million influencers across all main social media platforms, and you can use different filters to make the process easier. After that, you can automate the outreach and organize the negotiations based on their status. Finally, the software automatically captures all posts related to your brand and calculates results, giving you a report in seconds. 

Also, you can manually check their profiles or use online tools to check some basic metrics, like engagement and audience credibility.  Beware of these influencer  common practices that may affect your brand:

  • Fake followers and extreme changes in engagement: Influencers whose followers are not completely authentic. They might have bought fake followers, which affects the engagement by pumping it or lowering it. In these cases, the engagement does not reflect the organic relationship between the Influencer and the genuine users. 
  • Inconsistent content quality: Influencers who don’t create high-quality content and do not add value to their profiles by uploading intentional, well-thought and useful content to their audience. Mass uploading is not always good. 
  • Poor communication or missed deadlines: Influencers who aren’t able to timely answer to the proposal, the confirmation emails or generally meet deadlines will affect your campaign results and reporting. Avoid working with this type of influencers if your campaign has tight timing and deadlines.
  • Controversial past behavior: A really important step is to research the Influencer and their content before committing to working with them. Their behaviour online will always be remembered by the audience, and will affect the brands they work especially in long-term relationships and brand ambassador deals. 
  • Mismatch with brand values: For these reasons, it’s important to choose influencers with similar values to your brand that will evade addressing topics, situations or general content that will crash with your brand’s image. 

3. Budget

Once you’ve selected the ideal influencers that match your brand’s mission, key messaging and image you can define methods of payment and set aside the budget for the campaign. It’s important to be transparent with payment methods to give a good image to the influencers. 

4. Set a Clear Brief

A good brief should include a short description of your brand, key messagings, deliverables expected with timelines and do’s and don’ts with the content. If you can include some guides with links that give visual examples of what you expect, results and overall quality will be better. 

Finally, the brief should be general enough to give influencers options and let them choose what matches best with their style and audiences. 

5. Negotiate Terms

Be genuine from the start with your campaign goals, proposals and incentive. Have clear agreements on deliverables, deadlines, usage rights, content ownership and payment terms.

In some cases, like in paid partnerships, long campaigns and brand ambassadors we recommend using contracts or written agreements to ensure both parts understand and align with the expectations. 

6. Measure Results And Nurture Relationships

Take into account key performance indicators (KPIs) like reach, engagement, clicks, conversions, and content reuse. Also analyze the content quality and the match towards your brand. 

After gathering and measuring results, you can decide to nurture relationships with those content creators who performed well. The key to interacting with Influencers is to understand that what you’re developing is a relationship, not just a temporary transaction.  

We recommend that brands actively  continue developing relationships through different reonboardings, proposals and benefits. This way, brands can also start to maximize influencer-generated traffic in more ways than one. 

Nurture relationships by:

  • By offering the top performers better projects, like paid ads, ambassador roles and insider access.
  • Involve them into your brand’s marketing plan.
  • Reuse content for paid ads, website, email campaigns.
  • Invite them to events and involve them with important highlights of your brand,  like product launches.
  • Suggest nurturing ongoing partnerships with high-performing influencers.
  • Mention benefits like loyalty, better content quality, and stronger brand alignment.

Types of Influencers by Content Niche

Beauty  and Fashion:
Beauty influencers created a boom in the makeup industry and often grow into celebrity status. They’re a perfect match for all beauty, skincare, accessories, and bathroom-related product.  Fashion influencers promote clothing collections, styles, and aesthetics. They help accelerate fashion cycles and are ideal for online shops, shoes, accessories, purses, and beauty-related products. Fashion and beauty top influencer marketing niches, capturing 21.6% of the market.

Tech & Gaming:
Best reached on platforms like Twitch, these influencers share gameplay, reviews, and launches. They intersect with sci-fi, comics, and programming, making them ideal for software, tech gadgets, gaming accessories, and VPNs. This category is a complete success on Youtube, and headlines the chart with over 11.9% of influencer campaigns.

Fitness & Health:
These influencers promote healthy living by sharing gym exercises, diet routines, and nighttime habits. Ideal for sports and fitness brands, sustainable clothing, supplements, cooking appliances, natural skincare, and bedtime products. Instagram is a popular platform for health and fitness content, with a median of 979$ rate per collaboration.

Travel & Food:
These influencers review activities, cultures, and cuisines while sharing bucket lists, recipes, and travel tips. They’re ideal for hospitality, luxury travel items, cooking goods, creative experiences, and tourism services. TikTok is increasingly being used for this niche, and in total it account for 7% of influencer marketing niches. 

Finance & Business:
These influencers offer financial advice and business content. It’s key to work with trustworthy creators. Great for promoting online courses, financial software, formalwear, luxury goods, and tech-related luxury items.

3 Successful Influencer Marketing Campaigns 

1.Fashion Nova on Instagram

The clothing e-commerce brand Fashion Nova always has an influencer marketing campaign running. The brand became well-known six years ago after flooding the internet with pictures of different models wearing their products. They started with several micro-influencers  and with product exchange, but later used celebrities like Kylie Jenner and turned them into Brand Ambassadors. These ambassadors were called “Nova Babes.”

Now, Fashion Nova has more than 22M followers solely on instagram, and was able to expand the brand immensely into other clothing areas like swimwear, plus size fashion, sportswear and men’s clothing as well.

A key aspect of their campaign is that they reuse the content in their website product pictures and on their social media. 

2. Dunkin’ Donuts “Sipping is Beliveing” Micro-Influencer Campaign

The coffee and delicacy US store used a micro-influencer campaign to compete against Starbucks in the city of Philadelphia. Their objective was to be as authentic as possible and to convey a natural connection between the influencers and their audiences. To achieve this, they only recruited influencers with 50K followers or less, who created organic posts simply sipping Dunkin’ coffee in key spots around the city.

As a result, they reached over 1 million potential customers and achieved an overall engagement rate of 5.2%, making their influencer strategy a success.

3. Burger King’s new Whopper Dance on TikTok

To promote their new launch in 2020, Burger King took advantage of pandemic dances and asked popular TikTok creators Loren Gray, Avani Gregg, and Nathan Davis to make a video tutorial for a Whopper Dance. The idea was that the audience would copy them and post their interpretations of the dance, reaching even more people. 

As a result, the hashtag #WhopperDance became viral on the app and the Whopper ended being one of the star products of the Burger King menu.

Final Thoughts on Social Media Influencers

Brands already have very clear branding, key messaging, and benefits they want their audience to know. What usually will happen is that brands that have a very strong visual identity and imprint often have a hard time finding and choosing the ideal influencers to partner with. 

This is because influencers generally do not have very curated content (they do what’s popular or what will attract views), and as a result, there will always be something that isn’t a perfect match with your brand. 

That’s why we work to find middle ground with brands while curating a social media influencer marketing campaign. Concentrating on certain key elements and messaging will make it easier for brands to collaborate with various influencers who can bring different approaches to promoting their products. In this next article we help you define some categories on how to find the ideal influencers to work with.

Choosing the right platform, deliverables and content guidelines will go a long way in strengthening relationships and getting the results you actually want out of social media marketing. 

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FAQs
What is a social media influencer?

A social media influencer is a content creator who builds trust and credibility with their audience by consistently posting content on platforms like Instagram, TikTok, and YouTube. They influence purchasing decisions, fashion, and social trends through genuine recommendations and lifestyle sharing.

Why should brands use social media influencers for marketing?

Brands should collaborate with influencers because they offer higher engagement, access to niche audiences, cost-effective campaigns, stronger brand credibility, and valuable user-generated content that can be repurposed across marketing channels.

What types of collaborations can brands have with influencers?

Brands can collaborate with influencers through gifting/bartering, affiliate or commission-based partnerships, paid campaigns, brand ambassadorships, giveaways, live collaborations, co-branded content, and whitelisting for ad access.

How are influencers classified based on their follower count?

Influencers are categorized as nano (1K–10K followers), micro (10K–100K), mid-tier (100K–500K), macro (500K–1M), and mega/celebrity (1M+), with each category offering different levels of reach, engagement, and pricing.

How is influencer payment typically calculated?

Influencer payment can be calculated based on follower size, type of post requested, CPM (cost per thousand impressions), or a hybrid method combining a lower fee with commissions or bonuses based on performance.

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