Specific target groups of testers for Bioderma products
Case studies
Case studySeptember 29, 2025

Specific target groups of testers for Bioderma products

Bioderma was launching new face serums and needed to get high-quality reviews from relevant target groups. The key was the precise selection of suitable testers with specific skin types, especially for serums for acne-prone skin.

Campaign results

4 666
Applicants

More than 4.5 thousand people applied to test 4 products.

4 666
Completed questionnaires

The client gained deep insights into the target group.

120
Testers

The selection of testers was key – incorrect classification could damage the skin.

297
Reviews

Unique reviews on Testuj.to, Heureka.cz, and Notino.cz.

94 %
Product recommendations

All products received the Testuj.to Recommends seal.

4,6
Average rating

Sufficiently high across all 4 serum lines.

About the client

BIODERMA is part of the NAOS company, which has been serving skin biology for 40 years. The brand is a pioneer in professional dermatological care and creates products inspired by the skin's biological mechanisms.

Industry
Pharmaceutical manufacturing
Size
1000+ employees
Testing country
Czech Republic

Customers need to know the experiences of others

Bioderma products are high-quality and developed for specific skin types. However, potential customers need to be sure that the products will work for their skin type – a lack of reviews is an obstacle to purchasing.

Especially customers with atopic eczema have sensitive skin and are skeptical of all products. Honestly written reviews are an invaluable source of information for them and a decisive factor in their purchase.

Why Bioderma chose Testuj.to

The guaranteed 95% review return rate was one of the reasons the brand decided to work with us. A campaign focused on 4 products was advantageous and attractive for the client in terms of price-performance ratio.

What the campaign brought

4,666 people applied to test the four products. 120 testers participated in the campaign, publishing 297 reviews on three different platforms. The products received an average rating of 4.6, and 94% of testers would recommend them.

The client appreciated not only the high return rate of reviews but also that the negative feedback provided valuable information that they continue to work with.

Sample reviews

Bioderma Hydrabio Hyalu+ sérum 30 ml

Eliška

I was pleasantly surprised by the Bioderma Hydrabio Hyalu+ serum. A beautiful scent, great texture, my skin looked beautiful after using it. It spreads nicely, and application is simple. So far, I haven't found another serum that I'm this satisfied with."

Bioderma Sensibio Defensive sérum 30 ml

Martina

I have dry, sensitive skin prone to redness, and this serum nicely soothes and hydrates the skin. A plus is that it is fragrance-free, and the delicate texture absorbs almost immediately and isn't sticky."

Despite being intended for very specific skin types, 94% of testers would recommend them. As a result, the products deservedly earned our seal of quality – the 'Testuj.to Recommends' stamp."
The Testuj.to Team
Project & Customer Success
Testuj.to statement

Source: business.testuj.to

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