L’Oréal Professionnel Keratin Alpha Sleek Shampoo 300ml
Achieve smoother, softer and more manageable hair with L’Oréal Professionnel Keratin Alpha Sleek Professional Shampoo, a sulphate-free* formula designed to gently cleanse while helping to control frizz and unwanted volume. Its rich, ultra-creamy texture leaves hair feeling hydrated, smooth and refreshed, making it suitable for all hair types.
Powered by Keratin Sleeker and Amino Acid chains, L’Oréal Professionnel Keratin Alpha Sleek Professional Shampoo helps improve hair’s smoothness and manageability as part of the complete Keratin Alpha Sleek routine. Free from artificial colourants and alcohol, it delivers up to two weeks of smoother, frizz-controlled hair when used as directed.
Benefits
- Gently cleanses hair without stripping natural oils
- Helps control frizz and reduce unwanted volume
- Leaves hair feeling hydrated, smooth and refreshed
- Improves hair manageability over time
- Free from artificial colourants and alcohol
| Product Details | Specification |
|---|---|
| Volume | 300ml |
| Formula Type | Sulphate-free |
| Key Ingredients | Keratin Sleeker, Amino Acid chains |
| Shampoo Type | Professional Hair Care |
| For Hair Types | All hair types |
| Duration of Effect | Up to two weeks |
FAQ
How does this shampoo help with frizz control?
The shampoo contains Keratin Sleeker and Amino Acid chains that help smooth the hair cuticle, reducing frizz and unwanted volume over time.
Is this shampoo suitable for color-treated hair?
Yes, it is free from artificial colourants and alcohol, making it safe for color-treated hair while maintaining its integrity.
Can I use this shampoo with other L’Oréal Professionnel products?
Yes, it is designed to be used as part of the complete Keratin Alpha Sleek routine for optimal results.

Leah Metcalfe –
I’ve used this shampoo for two weeks now and my hair feels noticeably smoother. The frizz is much reduced, especially in the morning. It doesn’t leave my hair dry or stripped, which is a big plus for my daily routine.
Angela Miller –
The texture is rich and creamy, and it cleanses well without making my hair feel tight. I noticed less flyaways after just one use, and my hair stays manageable throughout the day.
Wendy Morrison –
As someone with curly hair, I was skeptical about frizz control. This shampoo has made a real difference. My hair feels softer and more defined, and I don’t need to use heavy styling products as much.
Deirdre North –
I use it every other day and have seen consistent improvement in smoothness. It’s gentle and doesn’t cause dryness, even after frequent washing.
Tim Manning –
The formula works well with my color-treated hair. I haven’t noticed any fading or damage, and my hair feels healthier and more manageable than before.