New study showcasing the MiniSURF interferometric microscope on hair fiber by Eotech at HPCI Mumbai

9 February 2025

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👉 The Skinobs team will be glad to welcome you on We Are Testing booth E10 for its first year at HPCI India, to talk about your evaluation projects, in Mumbai from February 18th to 19th 2025.

Eotech is co-exhibiting with Skinobs during HPCI India

They are several methods to assess the efficacy of a hair care product, most of them being made on hair strands. When it comes to hair surface state at a microscopic scale, hair fibers must be considered individually.

interferometric microscope

The Scanning Electronic Microscope is a well-known method, allowing to obtain high resolution images with the possibility to measure hair dimensions but not the height of keratin scales. Quantifying this parameter is a good way to demonstrate hair care product claims, such as “repairing” or “smoothing”.

Eotech, in partnership with SISLEY, recently carried out a study to prove the ability of the MiniSURF to highlight a hair care treatment efficacy.

A nourishing mask was applied after shampoo on wet hair 1 – 2 times per week.

3 bundles of hair have been collected from each volunteer:

– before treatment (T0),
– immediately after one product application and
– rinsing (T0imm) and after 28 days (T28).

After processing the data, the roughness parameters of each sample and condition have been calculated.

At T0imm and T28 roughness parameter Rz decreases of more than 8% for 2 volunteers, 3% for the 3^rd volunteer.

The smaller the roughness values, the smoother the surface, therefore the results show the hair surface is smoother after treatment.

A larger study should now be carried out on more volunteers of different hair types to measure the efficiency of the nourishing mask treatment according to hair types.

The full poster can be found at this link.

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