Cleanse & Soften 1
[Keratin Alpha Sleek] Professional shampoo for frizz-free & smooth hair
Keratin Alpha Sleek Shampoo with sulfate-free formula* cleanses and nourishes hair fiber. *Disclaimer - No added sulfates
Unlock heat protection up to 230°C*, for sleek, protected hair through every style.
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Say hello to your new go-to serum for frizz: the Keratin Alpha Sleek Mirror Sleek Serum. Formulated with Keratin Sealer + Amino Acid Chains, it works deep inside the hair fiber to reprogram hair at the deepest Keratin Alpha level. This next-generation anti-frizz serum helps seal the hair’s keratin structure, delivering long-lasting smoothness and volume control for several washes.
It provides anti-humidity up to 80%* and heat protection up to 230°C**, helping keep your style sleek, smooth, and polished through humidity and heat styling. With 11X instant smoothness*** it leaves hair visibly smoother and more manageable from the first use.
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How To Use
Step 1: Take 2-3 pumps for thin/medium hair & 6-8 pumps for thicker hair.
Step 2: Distribute product evenly.
Step 3: Blow-dry or flat iron to activate the formula.
Pro Tip:
For optimal frizz-control results, use a flat iron or blow-dryer to activate the formula. The serum is heat-activated and specifically designed to cross-link under heat for enhanced smoothness and shine.
Results & Benefits:
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Keratin Sealer+ Amino Acid Chains work from within the hair fiber to reshape the hair's structure, leaving it smoother, sleeker, and easier to manage.
DIMETHICONE • BIS-(MORPHOLINOMETHYL C1-4 DIALKOXYSILOXY) DIMETHICONE • BIS-CETEARYL AMODIMETHICONE • PARFUM / FRAGRANCE • LINALOOL • CITRONELLOL • GERANIOL.
Meet the L'Oréal Professionnel Keratin Alpha Sleek serum built to do more than mask frizz, it seals, smooths, and protects. This hair serum for frizz delivers up to several washes and provides heat protection up to 230°C * and anti-humidity up to 80% **. Think of it as the finishing step your smoothing routine has been missing. Suitable for all hair types and pairs seamlessly with the rest of the Keratin Alpha Sleek lineup.
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Unlike traditional serums that simply coat the hair, Keratin Alpha Sleek Mirror Sleek Serum works inside the hair fiber by reshaping Keratin Alpha chains when activated with heat. This helps deliver longer-lasting smoothness, frizz control, and mirror-like shine.
Yes. This hair serum for frizz is suitable for straight, wavy, curly, and coily hair. It works particularly well on frizz-prone, unruly, and humidity-affected hair while maintaining natural movement without feeling heavy.
The serum is designed to be applied to towel-dried or damp hair before blow-drying or flat ironing. Heat activates the formula, allowing it to create its smoothing network for optimal frizz control and shine.
No. Despite its name, the formula does not contain keratin. Instead, it targets the hair's natural Keratin Alpha chains, helping reshape the hair structure for smoother, sleeker-looking results when used with heat.
You can use this anti-frizz hair serum whenever you heat-style your hair. For long-lasting smoothness and optimal performance, pair it with the complete Keratin Alpha Sleek routine as recommended.
No. The lightweight formula spreads evenly through the hair and leaves a smooth, polished finish without a greasy, sticky, or heavy feel, making it suitable for everyday styling.
Yes. This frizz control hair serum provides heat protection, helping shield your hair from heat styling while enhancing smoothness and maintaining a sleek finish.
Yes. When used as part of the complete Keratin Alpha Sleek routine, the serum helps improve manageability and smoothness, making hair easier and faster to style every day.
Yes. You can layer the serum with your regular styling routine. For the best smoothing results, apply the serum first, activate it with heat, and then finish with your preferred styling products if needed.
Yes. L'Oréal Keratin Alpha Sleek Serum is suitable for color-treated and chemically treated hair. Its alcohol-free formula helps smooth frizz, enhance shine, and protect hair during heat styling without compromising your salon-treated results.