Keratin Alpha Sleek Mirror Sleek Serum by L'Oréal Professionnel, formulated with Keratin Sealer 5%.

It seals hair keratin structure for long-lasting smoothness, volume control up to 10 washes*.

It is anti-humidity up to 80% humidity in the air*.

Heat protection up to 230°C (450°F)*.

Daily styling in half the time**.

Transform hair for 2 weeks of smooth, frizz control by using the full routine**.

Heat-activated. Dry with hair dryer. Use straightening iron for longer lasting results.

This serum is artificial colorant free, and alcohol free.

Keratin is an animal-derived ingredient, also found in human hair. This product does not contain Keratin.