L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum

Smoothing serum for hair prone to frizz and unwanted volume. It is ideal for those who want to achieve a smooth, shiny, and polished look during both at-home and professional styling.

Benefits

• Helps smooth the hair and seal the hair structure for a long-lasting sleek effect
• Helps control frizz and volume for up to 10 washes*
• Provides protection against humidity up to 80%*
• Offers heat protection up to 230°C*
• Helps reduce daily styling time by up to half**
• Delivers instant shine and, when used as part of the full routine, helps maintain a smoother hair appearance for up to 2 weeks**
• Is free from alcohol and artificial colorants
• Does not contain keratin

*Brand instrumental tests **Instrumental test after 4 applications of the Keratin Alpha Sleek Shampoo + Smooth Transformer + Serum routine

Key ingredients

• Keratin Sealer 5% - helps seal the hair structure for a longer-lasting smoothing effect

Technology

• Keratin Alpha Sleek technology - works at the Keratin Alpha level, deep within the hair fiber, to help smooth the hair and reduce frizz as well as excessive volume
• Heat-activated - the formula is activated by heat during blow-drying; for longer-lasting results, the brand also recommends using a hair straightener

How to use

1. Shake the product well before use.
2. Comb through washed, towel-dried hair and divide it into two sections.
3. Spray the serum into the palm of your hand: 2–4 sprays for fine to medium hair and 6–8 sprays for thicker hair.
4. Rub the product between your palms and distribute evenly from the mid-lengths to the ends.
5. Do not rinse.
6. Activate with heat. Blow-dry the hair. Use a hair straightener for long-lasting results.