L’Oréal Kérastase

The Kérastase digital team understood the value of ratings and reviews content in driving ecommerce sales and sought out PowerReviews to execute turnkey sampling programs. The tactic puts the Kérastase product in the hands – and on the heads – of its key demographic. As a result, the company has seen this program pay significant dividends – delivering 95% of all the brand’s 5-star ratings.


About the Company

Founded in 1964 by scientists at L’Oréal Advanced Research, Kérastase is now the #1 professional haircare brand in the world, selling their luxurious products in over 37,000 salons in 65 countries. Kérastase invented care for hair, but not just any care – professional luxury care. Its Paris labs innovate tirelessly to deliver personalized solutions to every hair challenge. 


With the help of Kérastase’s unique hair diagnosis and prescriptive approach, hairdressers are able to understand the particular needs of all scalps and hair types and create a bespoke regimen for each client that delivers results.

The Opportunity

The Kérastase product line is sold online at and through Sephora, its exclusive retail partner. The digital marketing team is accountable for driving sales and acquiring new customers. The brand endeavors to provide all the information customers need to make confident online purchasing decisions.


Leading Kérastase digital marketing efforts alongside a small but mighty “Dream Team” is Mitchell Steinberg, Director of ECommerce and Digital Marketing for L’Oréal, overseeing the Kérastase and Shu Uemura brands.


Mr. Steinberg and team recognized the value of product reviews in driving incremental conversions. They also knew sampling was a solid strategy to encourage reviews. However, existing efforts weren’t delivering so the team decided to revamp its sampling program.

The Challenge

“Sampling has always been a key strategy for Kérastase,” said Mr. Steinberg. “Previously, we were conducting sampling campaigns through influencers and beauty product discovery services such as Birchbox. However, we realized the content stemming from these reviews was not being captured and leveraged on our own website.”


Mr. Steinberg was briefed on PowerReviews’ Product Sampling offering. Average review completion rates of 85% certainly piqued his interest. The program’s turnkey nature added further appeal. Mr. Steinberg decided to give the PowerReviews Product Sampling program a whirl and never looked back.

The Potent Power of Product Sampling

Over a 15 month period, Kérastase and the PowerReviews team conducted sampling campaigns for 15 Kérastase products. In total, PowerReviews sent out 1,165 products to reviewers, achieving an 88% review completion rate and an average rating of 4.46 out of 5 stars. Particularly of note, an impressive 95% of 5-star reviews generated have stemmed from the sampling campaigns.

The Kérastase team has found PowerReviews’ sampling campaigns to be so pivotal to its success that it continues to increase its investment in the program – up 130% in recent years.

The brand has been so impressed that Kérastase will shortly be running a joint campaign with its retail go-to-market partner Sephora, leveraging the PowerReviews Sampling for Reviews program.

“Moving forward, all new product launches will incorporate a sampling campaign. Our ultimate goal is to have reviews already prepopulated on our website once the product is introduced,” said Mr. Steinberg. “We’re also looking at doing an additional key round of sampling to boost our best-selling products and in scenarios where we see reviews are lacking or dated.”

Strategic Decision Guidance

Mr. Steinberg says the PowerReviews dashboard makes it easy to visualize the data and make determinations as to the best areas for additional sampling program investment for greatest impact. And PowerReviews full-year volume discounts make broad-scale sampling programs budget-friendly.

PowerReviews: Product Sampling That’s ‘Incredibly Strategic’

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