Alpha sleek mirror sleek keratin serum – thermal shield and mirror-effect smoothness take your hair's finish to an unprecedented level of shine and control with l'oréal professionnel's mirror sleek serum. This high-performance professional finisher is designed to seal the hair structure, guaranteeing extreme smoothness that lasts up to 10 washes. Its intelligent formula acts as an invisible shield, keeping frizz and volume under absolute control, even in extreme humidity up to 80%. As a heat-activated treatment, it not only protects your hair from high temperatures but also uses heat styling to lock in its smoothing properties. It's the essential finishing touch for those who demand flawless, manageable hair with silky movement that lasts for weeks. Key ingredients: 5% keratin sealer : powerful complex that aligns cuticles and seals the fiber structure for a smooth, long-lasting finish. Heat protectants : create an advanced defense barrier that preserves hair health against heat tools. Alcohol and dye-free formula: a pure and respectful blend that adds shine without drying out the fiber or altering the color. Humidity control technology : specific active ingredients that repel environmental frizz, keeping your hairstyle intact for longer. Its formula is suitable for all hair types and is optimized for heat activation (hair dryer and straightener). It stands out for its ability to cut styling time in half and offer professional heat protection up to 230°c. Benefits : long-lasting softness: maintains volume and frizz control for up to 10 washes. Anti-humidity shield: prevents hair from frizzing even in environments with 80% humidity. Extreme thermal protection: protects hair fibers from heat tools up to 230°c, preventing thermal damage. By using the complete routine, hair undergoes a total transformation: smoothness and frizz control for up to 2 weeks. The result is hair that is 77% shinier, with a silky texture and professional manageability that makes daily styling easier. How to use: preparation: shake the container well before using on detangled, washed and towel-dried hair. Dosage: spray into your hand (2-4 doses for fine/medium hair; 6-8 doses for thick hair) and rub to warm the product. Distribution: distribute evenly from mid-lengths to ends in sectioned hair. Do not rinse. Activation: dry completely with a hairdryer and use a flat iron to seal the technology and maximize the duration of the straightening. Seal in the shine of your hair and forget about frizz for weeks; add mirror sleek serum to your basket and enjoy a professional finish every day.