Product Description
L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum is a heat-activated leave-in serum designed to provide long-lasting smoothness while controlling frizz and unwanted volume.
Formulated with 5% Keratin Sealer, the serum helps seal the hair's keratin structure for smoother, more manageable results lasting up to 10 washes. It also provides anti-humidity protection in conditions of up to 80% humidity and protects hair from heat up to 450°F (230°C).
When used as part of the complete Keratin Alpha Sleek routine, the system transforms hair for up to two weeks of smoothness, frizz control, and volume control and can help cut daily styling time in half.*
Despite the product and technology name, the formula does not contain keratin. Keratin is an animal-derived ingredient, and this serum is formulated without it.
Key Benefits
- Provides long-lasting smoothness
- Controls frizz for up to 10 washes*
- Controls unwanted volume for up to 10 washes*
- Protects against humidity up to 80%*
- Provides heat protection up to 450°F / 230°C*
- Helps seal the hair's keratin structure
- Can reduce daily styling time by half when used as part of the complete routine**
- Provides up to two weeks of smooth, frizz-controlled results with the complete routine**
- Heat-activated formula
- Alcohol-free
- Artificial colorant-free
- Does not contain keratin
How to Use
Shake well before use. Apply to washed, towel-dried hair.
Detangle and divide the hair into two sections. Spray the product into your hands, starting with approximately 2–4 sprays for thin to medium hair or 6–8 sprays for thicker hair.
Rub hands together and distribute evenly through the lengths and ends. Do not rinse.
The formula is heat-activated, so blow-dry the hair after application. A straightening iron can be used for longer-lasting smoothing results.
Ideal For
Ideal for hair that needs:
- Long-lasting smoothness
- Frizz control
- Volume control
- Humidity protection
- Heat protection
- Faster daily styling
- Improved manageability
Free From / Additional Info
- Alcohol-Free
- Artificial Colorant-Free
- Keratin-Free
- Heat-Activated
- Leave-In Formula
- Part of the Keratin Alpha Sleek Routine
*Based on instrumental testing.
