L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Mirror Sleek Serum 1.69 oz

What It Is

A heat-activated leave-in serum that seals the hair's structure for up to 10 washes of smoothness, frizz control, and humidity protection.

What It Does

• Seals hair outer keratin structure for up to 10 washes*

• Anti-humidity up to 80% humidity in the air

• Heat protection up to 230C (450F)

• 6x smoother hair**

What Else You Need to Know

Formulated with 5% Keratin Sealer, this serum seals the hair structure for smoothness, frizz, and volume control that lasts up to 10 washes.

How to use:

1. Shake well before use.

2. On washed, towel-dried hair, section hair into two parts.

3. Spray into your hand (start with 2, 4 sprays for thin hair, 6, 8 for thick hair) and distribute evenly from lengths to ends.

4. Do not rinse.

5. This product is heat-activated. Blow-dry completely.

6. For maximum long-lasting results, use a straightening iron after blow-drying.