Radiance Mask

*Test ex vivo : 15 hair strands, measurements taken after immediate application and 96h, of the Shine Routine (shampoo + mask + treatment + oil).

Methods used

SHINE TEST

Hair shine is measured at different time points:
• Before damage: initial measurement (T-1)
• After SLS (Sodium Lauryl Sulphate) degradation: hair deliberately made dull (T0)
• After the first treatment with the routine (T1)
• Then after 24 h (T24h), 72 h (T72h) and 96 h (T96h) following this first treatment.
• Finally, a last measurement is taken after 8 applications, equivalent to 1 month of use (2 washes per week).

The hair strands are then placed in a climatic chamber (controlled temperature and humidity) to ensure a reliable and reproducible evaluation. Shine is measured with a professional spectrophotometer, using the 8° gloss indicator, a recognised method for precisely assessing the product's effect on hair radiance and mirror shine.

ANTI-FRIZZ TEST

Hair moisture content is assessed at several stages:
• Before bleaching (T-1),
• Just after bleaching (T0),
• After a first treatment with the routine (T1),
• Then after 24 h (T24h), 72 h (T72h) and 96 h (T96h) spent in a chamber with controlled temperature and humidity. Hair moisture is measured instrumentally and indirectly using an evaporimeter.
An expert technician evaluates the anti-frizz effect (T0/T24h/T48h/T72h/T96h) using an internal clinical scale. The hair strands are placed in a humidity chamber with controlled climatic conditions (T = 30 °C, RH = 70–80 %).

HYDRATION AND FIBRE RESTRUCTURING TEST

Hair hydration is measured at different time points:
• Before bleaching: initial hydration level (T-1)
• After bleaching: weakened and dried-out hair (T0)
• After a first treatment with the routine (T1)
• Then after 24 h (T24h), 72 h (T72h) and 96 h (T96h).
The structure of the hair fibre is also analysed under an electron microscope (SEM) to visualise cuticle closure, damage reduction and improvement of the hair surface.