*Ex vivo test: 15 strands, measurements after immediate application and 96h, of the Shine Routine (shampoo + mask + conditioner + oil).
*Free from sulphated surfactants

Methods used

SHINE TEST

Hair radiance 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 strands are then placed in a climatic chamber (controlled temperature and humidity) to ensure 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 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 temperature- and humidity-controlled chamber. 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 strands are placed in a humidity chamber under controlled climatic conditions (T = 30 °C, RH = 70–80 %).

FIBRE HYDRATION AND RESTRUCTURING TEST

Hair hydration is measured at different time points:
• Before bleaching: initial hydration level (T-1)
• After bleaching: weakened and dried 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.