L'Oréal Professionnel Sérum Mirror Sleek Keratin Alpha Sleek

This serum contains 5% keratin sealant to provide lasting smoothness, controlled frizz, and volume for up to 10 washes. It controls frizz at high humidity and offers thermal protection up to 230°C. Reduces styling time by half.

• The description claims that the product reduces styling time by half.
• The description claims that the product controls frizz with up to 80% effectiveness at high humidity.
• The description claims that the product provides controlled frizz and smoothness for up to two weeks when used with the full routine.