The experience of a hair care product is often a con game. A shampoo can be divine in the shower (a creamy lather, an enchanting scent) and turn into a nightmare as soon as the comb comes out. Why the gap? Because evaluating a product cannot stop at rinsing. It is in that grey zone, between the basin and the mirror, that a formula’s real efficacy is decided.
The expertise of the gesture: when science meets the salon
At SYRES we decided to explore this invisible link between washing and styling with absolute rigour. We did not simply test a product; we set up an in-depth sensory analysis conducted by expert hairdressers. In our in-house salon, designed specifically for our protocols, every product is scrutinised on ten precise technical descriptors.
A 360° reading of the hair fibre
Our experts do more than apply a product. They dissect it by touch and observation:
- The feel of the material: from the initial texture to the slip under the fingers.
- The precision of the gesture: a controlled application for constant test conditions.
- Immediate analysis: real-time observation of the product’s consequences on the fibre, from detangling to final hold.
Making the invisible measurable
What starts at the basin is confirmed (or collapses) at styling. This is where evaluation changes dimension. By crossing sensory perception with the real impact on the hair, we let brands understand precisely how their product behaves in real life. Having your formulas evaluated and validated by professionals of the gesture is far more than an R&D step: it is a quest for legitimacy, and a way to turn a diffuse sensation into indisputable proof of efficacy.
Did you know? To guarantee total neutrality and scientific precision, we built a genuine hair studio inside our premises: a controlled environment where every detail counts.
Originally published in French by SYRES France on 11 May 2026: read the original article.



