L'Oréal Professionnel Keratin Alpha Sleek Anti Frizz, Smoothing & Glass Shine Serum 50ml

L'Oréal Professionnel Keratin Alpha Sleek Anti Frizz, Smoothing & Glass Shine Serum 50ml is a professional leave-in hair serum designed to help smooth, protect and add shine to frizz-prone hair. The lightweight, clear formula is enriched with a 5% Keratin Sealer complex, which works to seal the hair’s keratin structure, helping to reduce the look of unwanted volume and support a sleeker, more polished finish. Hair may feel up to five times smoother with noticeably less frizz, while mirror-like shine is encouraged for up to several days. Suitable for all hair types and textures, it’s ideal for those who want their blow-dry to look smoother for longer and to help hair stay disciplined in humid conditions.

Used as part of a heat-styling routine, this serum offers heat protection up to 230°C and helps to shield hair from the effects of humidity. Applied to clean, towel-dried hair before blow-drying and straightening, it supports quicker styling and a glossy, glass-like result that still feels light and touchable.

Why we love it
- Heat-activated serum that helps to smooth the hair fibre, offering up to 230°C protection during blow-drying and straightening.
- Formulated with 5% Keratin Sealer to support long-lasting frizz and volume control while promoting a sleek, glass-like shine.
- Lightweight, leave-in texture that suits all hair types and textures without feeling heavy or greasy.
- Fits easily into a regular styling routine, helping hair look smoother, shinier and more disciplined even in humid conditions.

How to use
How to Use:
Shake the bottle well before use. On freshly washed, towel-dried hair, gently detangle and divide the hair into sections. Spray the serum into your hands, then smooth through the lengths and ends, using 2–4 sprays for fine to medium hair or 6–8 sprays for thicker hair. Do not rinse. Blow-dry thoroughly to activate the formula, then, if desired, follow with a straightening iron for a sleeker finish.

Frequency:
Use according to the product instructions or whenever you heat-style your hair and want added smoothness and shine.

Application Technique:
Apply to clean, damp hair from mid-lengths to ends, distributing evenly with your hands or a wide-tooth comb before drying. Focus on areas prone to frizz or puffiness and avoid the roots if you’re concerned about weight.

Best Practices:
For best cosmetic results, use as part of a complete smoothing routine with a suitable shampoo and mask. Start with a small amount and add more only if needed. Allow hair to dry fully with heat to help the serum work effectively.

Safety Tips:
For external use only. Avoid contact with eyes; if this occurs, rinse thoroughly with water. Discontinue use if irritation occurs and keep out of reach of children. Always follow any additional guidance on the product packaging.

Dimethicone, Bis-(Morpholinomethyl C1-4 Dialkoxysiloxy) Dimethicone, Bis-Cetearyl Amodimethicone, Parfum / Fragrance, Linalool, Citronellol, Geraniol

How to Use:
Shake the bottle well before use. On freshly washed, towel-dried hair, gently detangle and divide the hair into sections. Spray the serum into your hands, then smooth through the lengths and ends, using 2–4 sprays for fine to medium hair or 6–8 sprays for thicker hair. Do not rinse. Blow-dry thoroughly to activate the formula, then, if desired, follow with a straightening iron for a sleeker finish.

Frequency:
Use according to the product instructions or whenever you heat-style your hair and want added smoothness and shine.

Application Technique:
Apply to clean, damp hair from mid-lengths to ends, distributing evenly with your hands or a wide-tooth comb before drying. Focus on areas prone to frizz or puffiness and avoid the roots if you’re concerned about weight.

Best Practices:
For best cosmetic results, use as part of a complete smoothing routine with a suitable shampoo and mask. Start with a small amount and add more only if needed. Allow hair to dry fully with heat to help the serum work effectively.

Safety Tips:
For external use only. Avoid contact with eyes; if this occurs, rinse thoroughly with water. Discontinue use if irritation occurs and keep out of reach of children. Always follow any additional guidance on the product packaging.

- Heat-activated serum that helps to smooth the hair fibre, offering up to 230°C protection during blow-drying and straightening.
- Formulated with 5% Keratin Sealer to support long-lasting frizz and volume control while promoting a sleek, glass-like shine.
- Lightweight, leave-in texture that suits all hair types and textures without feeling heavy or greasy.
- Fits easily into a regular styling routine, helping hair look smoother, shinier and more disciplined even in humid conditions.