L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum
A professional heat-activated smoothing serum formulated with 5% Keratin Sealer to deliver long-lasting smoothness, frizz control, and a sleek, glossy finish.
Its advanced formula helps seal the hair's keratin structure, providing smoothness and volume control for up to 10 washes. Designed to resist humidity levels up to 80%, it protects hair against heat up to 230°C (450°F) while helping reduce daily styling time by half.
When used as part of the complete Keratin Alpha Sleek routine, it helps maintain smooth, frizz-controlled hair for up to 2 weeks.
Formulated without artificial colorants or alcohol. Does not contain animal-derived keratin.
Key Benefits
Long-Lasting Smoothness: Helps maintain sleek, smooth hair for up to 10 washes.
Frizz Control: Reduces frizz and helps keep hair smooth and manageable.
Volume Control: Controls excessive volume for a polished, sleek finish.
Anti-Humidity Protection: Helps resist frizz in humidity levels up to 80%.
Heat Protection: Protects hair against styling heat up to 230°C (450°F).
Faster Styling: Helps reduce daily styling time by up to 50%.
Enhanced Shine: Leaves hair looking glossy, silky, and radiant.
Heat-Activated Formula: Works with heat styling tools to deliver longer-lasting smoothing results.
Key Ingredients
5% Keratin Sealer: Helps seal and smooth the hair's keratin structure for long-lasting frizz and volume control.
How to Use
Shake well before use.
Apply to clean, towel-dried hair.
Detangle and divide hair into 2 sections.
Spray the serum into your palms:
Fine to medium hair: 2–4 sprays.
Thick hair: 6–8 sprays.
Rub hands together and distribute evenly through the mid-lengths and ends.
Do not rinse.
Blow-dry thoroughly to activate the formula.
For longer-lasting smoothness, finish with a straightening iron.
Pro Tip: For optimal results, use as part of the complete L'Oréal Professionnel Keratin Alpha Sleek routine.
Results
Smooth, sleek hair for up to 10 washes.
Long-lasting frizz and volume control.
Protection against humidity up to 80%.
Heat protection up to 230°C (450°F).
Daily styling in up to half the time.
Up to 2 weeks of smooth, frizz-controlled hair with the complete routine.











