L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum is a high-performance professional leave-in treatment specifically engineered to seal, smooth, and perfect sensitized or frizz-prone hair. Formulated with a highly concentrated 5% Keratin Sealer, this advanced serum works to instantly lock down the hair's outer cuticle structure, resulting in 2X less frizz and superior, long-lasting volume control¹ even in high-humidity conditions.
This lightweight, non-greasy formula dramatically simplifies your daily styling regimen, allowing you to achieve more than 3 times faster blow-drying, or beautifully styled hair in up to half the time². For optimal, salon-grade results, this professional-grade serum is designed to be heat-activated by drying with a hairdryer. When used as part of the complete routine, it transforms the hair fiber to guarantee up to 2 weeks of continuous smooth, frizz control³. Formulated without animal-derived Keratin, artificial colorants, or drying alcohols, it delivers a flawless, glass-like reflective shine and weightless softness for all hair types.
¹ Instrumental test after application of the routine.
² Instrumental test after 4 applications of the routine.
³ Instrumental test after 4 applications of the Smooth Transformer + 10 shampoos.
Size: 100ml Fragrance: N/A
Size: 50ml
Skin Type: N/A
KEY FEATURES
• INSTANT DISCIPLINE: Eliminates unmanageable flyaways and frizz for a polished finish.
• HIGH-SHINE RADIANCE: Enhances light-reflecting properties for a brilliant, salon-quality appearance.
• THERMAL PROTECTION: Shields the hair fiber from heat styling damage and environmental stress.
• LIGHTWEIGHT FORMULA: Non-greasy Alpha-Keratin complex provides silkiness without weighing down hair.
• PRO TIPS: Apply to dry or damp lengths for elite professional smoothing results.