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Clinical study of the Thickening Protocol

CLINICAL STUDY

Thickening Protocol

Strengthened, thickened & enhanced hair

The Thickening Protocols were developed to act directly on the hair fibre and visibly increase hair thickness without weighing it down.

Thanks to the combination of several complementary treatments, they help strengthen the hair fibre and provide an immediate, long-lasting thickening effect*.

The effectiveness of the protocols was assessed through 4 independent ex vivo tests, supplemented by scientific laboratory observations, in order to precisely measure the increase in hair diameter.

Like all Luxéol cosmetic products, thickening cosmetic products are tested under dermatological control to assess their good skin tolerance, in addition to the efficacy tests presented on this page.

Scientifically assessed effectiveness

Ex vivo studies show that the Thickening Protocols make it possible to:

  • significantly increase the hair diameter by 35 to 42%, depending on the protocol*
  • provide a visible thickening effect from the first use*

EVALUATION PROTOCOLS

Scientific methodology

Ex vivo studies are carried out on natural human hair strands.

The protocol consists of:

  1. Measure the diameter of the hair before application
  2. Apply the complete thickening protocol 
  3. Measure the diameter of the hair fibre again using a scanning electron microscope (SEM), which uses an electron beam to measure the diameter of the hair at the μm scale.  The measurement is taken immediately after application of the protocol.
  4. After 16 applications of the protocol (2 months), the diameter is measured again

On each strand, several hairs are carefully selected to take precise measurements at the core of the hair fibre.

STUDY RESULTS

Results of ex vivo studies

Studies show a significant increase in hair diameter from the first use, with an immediately visible thickening effect that is enhanced with repeated applications*.

+42% from the 1st use*
+38% from the 1st use*
+38% from the 1st use*
+36% from the 1st use*
+35% from the 1st use*

Immediate and long-lasting effect:

- Oily hair protocol:
Ex vivo test, 25 tresses, 35% thicker after immediate use (shampoo, leave-in conditioner, serum).
Long-lasting effect: +39% after 16 applications

- Thickening Protocol for bleached hair and Thickening Protocol for dry hair:
Ex vivo test, 25 tresses, 38% thicker after immediate use of the Thickening Protocol (shampoo + mask + mousse).
Long-lasting effect: +37% after 16 applications.

- Thickening Protocol for normal fine hair:
Ex vivo test, 30 25 tresses, 36% thicker after immediate use (shampoo + conditioner + serum).
Long-lasting effect: +38% thicker after 16 applications.

- Favourite Thickening Protocol:
Ex vivo test, 25 tresses, 42% thicker after immediate use (shampoo + mask + serum).
Long-lasting effect: +45% thicker after 16 applications.

View supporting evidence (*)

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