Up to two weeks of smooth. L’Oréal Professionnel Keratin Alpha Sleek Smooth Transformer is a progressive smoothing treatment built on the Keratin-Alpha shaper and amino-acid chains. It works at the deepest level of the hair’s keratin to tame frizz and volume — in the salon or at home — and the results build with every use.
With the full routine, hair is 5× smoother with 2× less frizz and 77% more shine, and daily styling time is cut in half, without compromising the hair’s integrity.* It is the technical step: once a week after shampoo, with the Professional Hair Mask on the other wash days.
Who It’s Best For
Frizzy, unruly or humidity-reactive hair that wants a longer-lasting blow-dry.
Natural, colour-treated and chemically treated hair.
Key Benefits
Progressive smoothing: Frizz and volume control that lasts up to two weeks and improves with regular use.
Less styling time: Smoother, more disciplined hair that is faster to blow-dry.
More shine: 77% more shine with the full routine.*
Hair integrity preserved: Free of artificial colourants and alcohol.
*Instrumental tests, Shampoo + Smooth Transformer + Mask. In consumer testing after 4 applications (67 consumers), 70% said their hair had never been so smooth and 82% said it had never been quicker to style.
Usage
Shake well. After shampooing, divide the hair in two and apply evenly from lengths to ends (30–50 g, more for thick or dense hair). Leave on for 10–15 minutes, then rinse thoroughly.
To activate the smoothing, blow-dry the hair completely and finish with a pass of the flat iron. Use once a week; on the other wash days, use the Professional Hair Mask.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Shipping Information
Free shipping in Canada on orders $150+ and to the U.S. on orders $200+
Returns & exchanges
To learn more about our Return & Exchange Policy, click here.
Support?
Our customer support team is available and ready to assist with any questions or concerns. Whether it’s about your order, products, or just some haircare advice—we’ve got you covered.
