Anti-frizz Sealing Mirror-effect Serum

Celebre Store is an authorized official retailer of professional haircare products. From four generations of hairdressers since 1914 we select exclusively original, new and sealed products, covered by the manufacturer's official warranty. The L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum 50ml is a professional anti-frizz serum that seals the hair's keratin structure, delivering softness, mirror-effect shine and long-lasting humidity control.

Sealing anti-frizz serum for smooth, shiny and disciplined hair

The L'Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Serum is formulated with 5% Keratin Sealer, a technology that helps seal the hair fiber and protect hair from humidity. The result is long-lasting smoothness, soft and shiny hair for up to 10 washes.

This professional anti-frizz serum also provides heat protection up to 230°C, makes styling easier and reduces styling time. Ideal to complete the Keratin Alpha Sleek routine, it helps keep hair disciplined and shiny for longer.

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Benefits of Keratin Alpha Sleek Mirror Sleek Serum

Long-lasting anti-frizz effect

Helps keep hair smooth for up to 10 washes.

Seals the keratin structure

Smooths the hair fiber and improves manageability.

Humidity protection

Helps protect hair from humidity by up to 80%.

Thermal protection up to 230°C

Ideal before blow-drying and flat ironing.

Enhanced mirror-effect shine

Delivers intense gloss and luminous hair.

Reduces styling time

Makes drying and styling quicker and easier.

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Who it's recommended for

Ideal for frizzy hair

Perfect for controlling frizz.

Great for unruly hair

Helps discipline and smooth the hair.

Perfect for straight or wavy hair

Improves softness and shine.

Ideal before styling

Protects from heat and facilitates styling.

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How to use Keratin Alpha Sleek Mirror Sleek Serum

Application

Shake well before use
Apply to washed, towel-dried hair
Divide hair into two sections

Dosage

2–4 pumps for fine to medium hair
6–8 pumps for thick hair

Distribution

Rub the product between your hands
Apply evenly to lengths and ends
Do not rinse

Activation

Blow-dry
Use a flat iron for longer-lasting results

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Keratin Alpha Sleek Technology

Keratin Sealer 5%

Seals the hair's keratin structure.

Anti-humidity protection

Helps keep hair disciplined.

Thermal protection

Shields hair from heat up to 230°C.

Professional glossy finish

Delivers mirror-effect shine.

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Visible results

Smoother, more disciplined hair
Reduced frizz
Mirror-effect shine
Softer hair
Heat protection
Faster styling

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Why choose Keratin Alpha Sleek Mirror Sleek Serum

Professional anti-frizz serum
Sealing serum for smooth hair
Mirror-effect shine serum
Heat protection serum up to 230°C
L'Oréal Professionnel anti-frizz serum
Disciplining serum for frizzy hair

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Why buy from Celebre Store

Authorized official retailer
Guaranteed original products
Only new and sealed products
Official manufacturer warranty
Professional experience since 1914

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FAQ – Frequently Asked Questions

1. Is Keratin Alpha Sleek Mirror Sleek Serum anti-frizz?

Yes, it helps control frizz long-term.

2. Does it protect from heat?

Yes, it protects up to 230°C.

3. Should it be rinsed out?

No, it is a leave-in serum.

4. Use on wet or dry hair?

Apply to washed, towel-dried hair.

5. How long does the effect last?

Up to 10 washes.

6. Is it necessary to use a flat iron?

Recommended for more long-lasting results.