Keratin Alpha Sleek

L'Oréal Professionnel Keratin Alpha Sleek | Smooth, Control & Shine without compromise. The Keratin Alpha Sleek collection by L'Oréal Professionnel was developed for anyone struggling with frizz, unruly hair and a lack of shine. This new generation of smoothing care combines powerful keratin technology with amino acid chains to make hair intensely smooth without weighing it down. Whether your hair is fine or thick, natural, coloured or sensitive to moisture: Keratin Alpha Sleek makes hair visibly softer, more manageable and smooth for longer – with a professional finish, right at home. Why choose Keratin Alpha Sleek? Makes hair up to 5× smoother for a silky appearance Provides 2× less frizz, even in high humidity Offers effective frizz and volume control without weighing hair down Provides up to +77% more shine for a healthy-looking appearance Halves styling time thanks to better detangling and manageability Helps protect and strengthen the natural hair structure This collection is ideal as an anti-frizz solution, for smoothing care or as the perfect preparation for heat styling such as blow-drying or straightening. Active technology: Keratin Sleeker + amino acid chains The formula works deep within the hair fiber and focuses on what hair really needs: Repairs and strengthens the hair fiber at the keratin level Smooths and evens out the hair structure Provides long-lasting control over frizzy and unruly hair Improves resilience and suppleness without a stiff result Use & routine The Keratin Alpha Sleek products are designed as a complete care routine, with options for cleansing, care, intensive masks, leave-in care and professional refill packaging. This makes it easy to tailor the routine to your hair type and needs. Tip: Use the care treatments weekly for an optimally smooth and shiny result.