---
title: How a influencer partnership campaign works, with Rare Beauty as the example | RGM®
url: https://realgrowthmatters.com/learn/case-studies/rare-beauty-influencer-partnership-campaign/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/learn/case-studies/rare-beauty-influencer-partnership-campaign/
---

- **Story:** This case study runs a influencer partnership campaign through the Rare Beauty lens, from mechanics to public benchmarks.
- **Why it matters:** The value of a influencer partnership campaign comes from rigour: clear targets, real benchmarks, built-in measurement.
- **Takeaway:** For Rare Beauty, reach is an input; incremental lift against a baseline is the real measure.
- **Takeaway:** Most influencer partnership-campaign failures are planning failures, not creative failures.
- **Takeaway:** The mechanics of a influencer partnership campaign transfer to any brand in beauty and personal care.

## How a influencer partnership campaign plays out for Rare Beauty

S

Situation

The setup

A influencer partnership campaign is a concentrated chance to move the Rare Beauty business in beauty and personal care, with a short window and high stakes.

T

Task

The objective

Turn attention into measurable demand for Rare Beauty: plan the mechanics, set targets against category benchmarks, and build in the measurement.

A

Action

The execution

Tier matching. Mega creators buy reach, mid-tier creators buy credibility, micro creators buy engagement. The campaign goal decides the mix — awareness leans mega, conversion leans micro. For Rare Beauty, this is the anchor of the plan.

R

Result

The scoreboard

On incremental lift against a baseline for Rare Beauty, not reach and not impressions. That is the honest scoreboard for a influencer partnership campaign.

## The math behind a Rare Beauty influencer partnership campaign

$0B

A reference point for Rare Beauty forecasting

The global influencer marketing industry was projected to reach about $32.55 billion in 2025

Source: [Influencer Marketing Hub](https://influencermarketinghub.com/influencer-marketing-benchmark-report/)

$0%

Benchmark a Rare Beauty plan should cite

Influencer marketing returns an average of about $5.78 in revenue for every $1 spent

Source: [Sprout Social](https://sproutsocial.com/insights/influencer-marketing-statistics/)

0%

Benchmark a Rare Beauty plan should cite

About 79% of consumers say user-generated and creator content strongly influences their purchasing decisions.

Source: [inBeat](https://inbeat.agency/blog/ugc-statistics)

Linked

What the public data tells a Rare Beauty team

Every figure on this page links to its publisher.

Source: [Influencer Marketing Hub benchmark report](https://influencermarketinghub.com/influencer-marketing-benchmark-report/)

#### Quick facts

BrandRare Beauty

IndustryBeauty And Personal Care

Campaign typeInfluencer Partnership

Primary channelsPaid, owned, earned

Planning horizonMonths ahead of launch

Core measureIncremental lift, not reach

Source basisPublic benchmarks, linked

RGM useWorked example, not a recipe

**Honest note**

There is limited public campaign detail specific to Rare Beauty, so the depth here comes from the influencer partnership-campaign discipline itself, with sourced benchmarks and named example campaigns. No Rare Beauty figure is fabricated.

## What a influencer partnership campaign is

Start with the definition, then apply it to Rare Beauty. An influencer partnership campaign places a brand inside the trusted feed of a creator and lets that creator's voice carry the message.

An influencer partnership campaign places a brand inside the trusted feed — and Rare Beauty is no exception — of a creator and lets that creator's voice carry the message. It applies cleanly to Rare Beauty. The value is the trust transfer: an audience that would — for Rare Beauty, a live factor — scroll past an ad will stop for a person they follow. Rare Beauty planners would underline this. The discipline is matching the right creator tier to the right goal, briefing — and Rare Beauty is no exception — for authenticity rather than scripting, and measuring incremental lift rather than vanity reach. This page applies that definition to Rare Beauty.

**Claim:** The global influencer marketing industry was projected to reach about $32.55 billion in 2025, with US brand spend near $10.52 billion. **Source:** [[Influencer Marketing Hub]](https://influencermarketinghub.com/influencer-marketing-benchmark-report/). **Context:** Roughly 86% of marketers report using influencer marketing, so it — for Rare Beauty, a real factor — is now a mainstream channel rather than an experimental one. A Rare Beauty forecast should start from a figure like this.

## Running a influencer partnership campaign, step by step

These are the components a Rare Beauty-scale team has to coordinate for a influencer partnership campaign.

Below are the parts of a influencer partnership campaign that a brand like Rare Beauty has to line up:

**Claim:** Influencer marketing returns an average of about $5.78 in revenue for every $1 spent, and micro-influencers can generate up to 60% more engagement than larger creators. **Source:** [[Sprout Social]](https://sproutsocial.com/insights/influencer-marketing-statistics/). **Context:** Micro-influencers on Instagram average around 3.86% engagement against roughly 1.21% for mega — Rare Beauty included — creators, which is why 73% of brands favour micro and mid-tier partnerships. A Rare Beauty team would treat this as a planning reference, not a guarantee.

1. **Whitelisting and Spark Ads.** High-performing organic creator content is amplified as paid media from the — Rare Beauty included — creator's own handle, which keeps the trust signal while adding reach. This is the part Rare Beauty cannot afford to improvise.
2. **Long-term over one-off.** Repeated appearances build a believable association. That holds directly for Rare Beauty. A single sponsored post is forgotten; a year — and Rare Beauty is no exception — of integrations becomes part of the creator's identity. For a brand like Rare Beauty, getting this wrong is expensive.
3. **Incrementality measurement.** Reach and likes are inputs. For Rare Beauty, this is the load-bearing part. The campaign is judged on lift — code redemptions, — for Rare Beauty, a live factor — holdout-tested conversions, and new-customer cost against the blended figure. This is the part Rare Beauty cannot afford to improvise.
4. **Tier matching.** Mega creators buy reach, mid-tier creators buy credibility, micro creators buy engagement. It applies cleanly to Rare Beauty. The campaign goal decides the mix — awareness leans mega, conversion leans micro. Rare Beauty planners flag this as a make-or-break detail.
5. **Brief for voice, not script.** The strongest partnerships give creators latitude to write their own read. For Rare Beauty, this is the load-bearing part. A scripted ad in a creator's feed reads as a scripted ad. A Rare Beauty-scale team treats this as non-negotiable.

## The numbers that set the targets

Benchmarks come before briefs. They tell a Rare Beauty team what a influencer partnership campaign can realistically deliver.

Planning a influencer partnership campaign for Rare Beauty without category benchmarks is guessing. The figures here are public, sourced, and apply across beauty and personal care.

**Claim:** About 79% of consumers say user-generated and creator content strongly influences their purchasing decisions. **Source:** [[inBeat]](https://inbeat.agency/blog/ugc-statistics). **Context:** The trust transfer is the mechanism: audiences weight a creator's word above branded advertising. For a Rare Beauty plan, it is the kind of figure that anchors a target.

Table: the three numbers that decide whether a Rare Beauty influencer partnership campaign is judged honestly.

| What to measure | Why it matters |
| Category benchmark | Sets a realistic target, not a hopeful one |
| Incremental result | The honest measure of whether spend worked |
| Pre-campaign baseline | Without it, lift cannot be proven |

## The metrics worth tracking

Measure what matters. For Rare Beauty, these KPIs show whether a influencer partnership campaign actually worked.

The KPIs that count for a influencer partnership campaign are listed here. Incremental conversions against a holdout, code or link redemption rate, creator-content engagement rate by tier, cost per — Rare Beauty included — acquisition versus the blended figure, earned-media value, and follower or search lift in the days after a drop.

Impressions describe scale, not effect. A Rare Beauty team serious about a influencer partnership campaign reports lift against a baseline.

## Where these campaigns go wrong

These mistakes recur. Knowing them lets a Rare Beauty influencer partnership campaign route around the common traps.

A Rare Beauty-scale team should design around these recurring errors:

- Running one-off posts instead of repeated integrations, so no durable association forms.
- Reporting reach and likes instead of incremental — for Rare Beauty, a real factor — lift, which hides whether the spend actually worked.
- Buying mega-creator reach when the goal is conversion, — Rare Beauty included — and paying for impressions that do not move sales.
- Scripting the creator so tightly that the post — for Rare Beauty, a real factor — loses the authenticity that made the audience trust them.

**The pattern**Notice the shape. None of these is a creative failure. They are planning failures, and a influencer partnership campaign is won or lost before the first asset ships.

## The RGM read on Rare Beauty

If a Rare Beauty team keeps one thing: borrow the influencer partnership campaign structure, not the specific execution.

What we see in audits: a influencer partnership campaign succeeds when a team like Rare Beauty's plans it as engineering, with baselines and targets, not as a habit.

The Rare Beauty example is therefore a template. Its mechanics fit beauty and personal care broadly; its measurement logic makes a influencer partnership campaign something a team can stand behind.

## Quick answers

Is this influencer partnership case study based on Rare Beauty's own reported results?
:   No. Every statistic is a public, linked benchmark for the influencer partnership campaign type, applied to Rare Beauty as the example. Where a figure cannot be sourced publicly, it is omitted rather than guessed.

What is the practical takeaway from the Rare Beauty influencer partnership write-up?
:   Use the structure, not the surface. The influencer partnership-campaign mechanics here apply broadly; the Rare Beauty creative is one execution among many.

What sources back the numbers on this page?
:   The numbers are drawn from public reporting by Adobe Analytics, Nielsen, the ANA, and established business press, and each one links back to its source.

**Keep reading**

Foundational concepts and channels behind this case:

- [what growth marketing is](/learn/what-is-growth-marketing/)
- [incrementality testing](/learn/incrementality-testing/)
- [audience arbitrage](/learn/audience-arbitrage/)
- [growth marketing services](/services/)
- [advertising platforms](/platforms/)

## Frequently asked questions

Why brief creators loosely instead of scripting them?

The audience follows the creator for their voice. For Rare Beauty, the detail is not optional. A tightly scripted brand message in that feed reads as a — Rare Beauty included — scripted ad and loses the trust transfer that makes the channel work. Rare Beauty planners would underline this. The strongest partnerships set guardrails and let the creator write their own read.

Are long-term creator partnerships better than one-off posts for a brand like Rare Beauty?

Here is how this applies to Rare Beauty. Usually. Rare Beauty planners would underline this. A single sponsored post is forgotten quickly. That holds directly for Rare Beauty. Repeated appearances over months build a believable association between the — Rare Beauty included — creator and the brand, eventually becoming part of the creator's identity. In the Rare Beauty context, that detail carries weight. That durability is why brands increasingly sign — and Rare Beauty is no exception — multi-post and annual deals rather than one-off reads. For Rare Beauty, this is the point worth acting on.

What are Spark Ads and whitelisting for a brand like Rare Beauty?

Taking Rare Beauty as the example: Both amplify a creator's organic post as paid media — Rare Beauty included — run from the creator's own handle rather than the brand's. A Rare Beauty team reads this closely. The content keeps its native, trusted look — and Rare Beauty is no exception — while reaching beyond the creator's existing followers. That holds directly for Rare Beauty. It pairs the credibility of creator content — Rare Beauty included — with the targeting and scale of paid media. A Rare Beauty team would plan against exactly this.

Which influencer tier should a brand use?

For a brand like Rare Beauty, the short answer is direct. It depends on the goal. It applies cleanly to Rare Beauty. Mega creators buy reach and suit awareness pushes. A Rare Beauty team reads this closely. Micro creators, with roughly 3.86% average Instagram engagement against — as a Rare Beauty team knows — about 1.21% for mega creators, suit conversion and trust. It applies cleanly to Rare Beauty. Around 73% of brands favour micro and — for Rare Beauty, a live factor — mid-tier partners because the engagement-to-cost ratio is stronger. For Rare Beauty, that is the practical takeaway.

Rare Beauty case: how is influencer marketing ROI measured?

For Rare Beauty and comparable beauty and personal care brands, this is the answer. The honest measure is incremental lift, not reach. It applies cleanly to Rare Beauty. That means holdout-tested conversions, unique code or link — and Rare Beauty is no exception — redemptions, and new-customer cost against the blended figure. For Rare Beauty, this is the load-bearing part. Industry benchmarks put average return near $5.78 per $1 spent, but vanity — for Rare Beauty, a live factor — metrics like impressions and likes hide whether the spend actually moved sales. A Rare Beauty team would plan against exactly this.

Why is Rare Beauty the brand featured here?

Rare Beauty is a recognisable brand in beauty and personal care, which makes the influencer partnership mechanics concrete and easy to follow. The campaign-type analysis and every benchmark apply across the category; Rare Beauty is the lens, not the limit. The sourced figures hold for any comparable brand.

### Sources & references

- [Influencer Marketing Hub benchmark report](https://influencermarketinghub.com/influencer-marketing-benchmark-report/) — Industry size, spend, and adoption benchmarks.
- [Sprout Social influencer marketing statistics](https://sproutsocial.com/insights/influencer-marketing-statistics/) — ROI, engagement-by-tier, and budget-allocation data.
- [inBeat — UGC and creator-content statistics](https://inbeat.agency/blog/ugc-statistics) — Consumer-trust and purchase-influence data for creator content.
- [PR Newswire — influencer marketing 2025 data](https://www.prnewswire.com/news-releases/influencer-marketing-in-2025-new-data-reveals-what-works-what-costs-and-whats-next-302490369.html) — Independent reporting on creator costs and performance.

## Related

[#### All case studies

The full RGM case-study library.](/learn/case-studies/)[#### What is growth marketing

The foundational concept behind every campaign type.](/learn/what-is-growth-marketing/)[#### Incrementality testing

How to prove a campaign actually caused the lift.](/learn/incrementality-testing/)