This hair serum is 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*, with 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.

*Instrumental tests. 
**Instrumental test after 4 applications of Keratin Alpha Sleek Shampoo + Smooth Transformer + Serum.

How to use: Shake before use. On washed and towel-dried hair, detangle and section hair into two parts. Spray into your hand into two parts. 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 lengths to ends. Do not rinse. Heat-activated: dry with dryer or use straightening iron for longer-lasting results.