Vitamino Color Spectrum Professional Glass Shine Serum by L’Oréal Professionnel, enriched with 5% Alpha-silane and water free. 
Our leave in serum locks in glass shine for up to 72 hours* with results that last up to 10 washes**. Formulated without water, Alpha-silane is an active care ingredient that coats the hair cuticle surface with a protective layer when activated by heat. 

The result:
- Protection against UV damage***
- Anti-frizz*** & Anti-humidity*** (up to 80% humidity in the air). 
- Heat protection up to 230°C 

Proven efficacy on the 5 colour dimensions****:
1. Shine: High Glass shine 
2. Vibrancy: Rich, vibrant colours
3. Contrast: Optimal perception between multiple shades
4. Tone: Helps neutralise unwanted reflects
5. Brightness: Level of brightness and darkness are well preserved

*Up to 72h after application, instrumental test vs unwashed hair
** Anti-frizz, thermoprotection, nourishment, smoothness, softness up to 10 washes, instrumental tests vs sensitised hair
***Instrumental test
****Instrumental test after continued use of the full Vitamino Color Spectrum routine

The serum has a liquid texture: do not apply more than one pump at a time and section the hair beforehand if necessary. 
Shake before use. After the full Vitamino Color Spectrum routine, apply on clean, towel-dried hair. 1-2 pumps for thin to medium hair, 3-4 pumps for thicker hair. Distribute evenly over the lengths and ends. Do not rinse. Dry hair completely with desired drying techniques. 

[For optimal result]: use with heating plates working at 180°C minimum. Once hair is dried, straighten hair with a straightening iron. Designed for use with a straightening iron.

[Precaution]: Shake before use. Store in a cool and dry area. Clean and lock the pump after each use. In case of contact with eyes, rinse carefully with water. The evolution of fragrance over time is expected due to the potency nature of the ingredients, it is important to note that this change does not affect its efficacy.