Product Overview 

Keratin Alpha Sleek Mirror Sleek Serum by L'Oréal Professionnel, formulated with Keratin Sealer 5%. The Mirror Sleek serum seals the hair’s keratin structure to control unwanted volume and deliver instant shine that lasts up to 5 days¹. When used with the full routine, it will reprogram hair for up to 2 weeks of frizz control². The serum helps to fight against up to 80% humidity³ with heat protection up to 230°C (450°F)⁴, controlling unwanted volume for daily styling in half the time⁵. Heat-activated. Dry with hair dryer. Use straightening iron for longer lasting results. This serum is artificial colorant free, and alcohol free. ¹Instrumental test after 1 application of shampoo, mask & serum. ² Consumer test on 68 participants, 1 application/week for 4 weeks. Based on a 15-day break observation. ³Instrumental tests, with full routine after 4 uses of the Smooth Transformer. ⁴Instrumental tests. ⁵Instrumental tests with routine 4 times of Shampoo + Smooth Transformer + Leave-on. Note: Keratin is an animal-derived ingredient, also found in human hair. This product does not contain Keratin.

How To Use 

• -Shake before use.
• -On washed and towel-dried hair, detangle and section hair into two parts.
•  -Spraying into your hand, start with 2-4 sprays for thin to medium hair and 6-8 sprays for thicker hair.
• -Rub hands together and distribute product evenly from mid-lengths to ends.
•  -Do not rinse.
•  -Heat-activated.
• Dry with dryer.
•  Use straightening iron for longer-lasting results.