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About this product

L’Oréal Professionnel Keratin Alpha Sleek Complete Set

The L’Oréal Professionnel Keratin Alpha Sleek Complete Set is a professional hair-smoothing routine that keeps hair smooth, frizz-free, and controlled for up to 2 weeks. This complete set combines cleansing, intensive care, progressive smoothing, and heat-activated sealing for maximum smoothness, shine, and manageability.

The formulas are enriched with Keratin-Alpha Shaper, amino acid chains, and Keratin Sealer technology, which work together to restructure, strengthen, and seal the hair fiber. The result is visibly softer, stronger, and shinier hair with controlled volume. Suitable for all hair types, including color-treated and chemically treated hair.

Set contents

  • L’Oréal Professionnel Keratin Alpha Sleek Shampoo 300 ml

  • L’Oréal Professionnel Keratin Alpha Sleek Mask 250 ml

  • L’Oréal Professionnel Keratin Alpha Sleek Smooth Transformer 200 ml

  • L’Oréal Professionnel Keratin Alpha Sleek Mirror Serum 50 ml

Key features

  • Complete professional hair-smoothing routine

  • Up to 2 weeks of smoothness, frizz control, and volume control*

  • With Keratin-Alpha Shaper and amino acid chains

  • Strengthens and restructures the hair fiber

  • Intensive nourishment and hydration

  • Instant shine and silky-soft results

  • Heat protection up to 230°C

  • Anti-humidity protection

  • Suitable for all hair types

  • Alcohol- and artificial colorant-free

Results & benefits

  • Up to 5× smoother hair

  • 2× less frizz and better volume control

  • Long-lasting smooth results for up to 2 weeks*

  • Faster daily styling

  • Hair remains strong, supple, and healthy

* Instrumental test after 4 applications of Shampoo + Smooth Transformer + Serum

How the routine works

The Keratin Alpha Sleek routine works in layers:

  • The Shampoo gently cleanses and prepares the hair fiber

  • The Mask intensively nourishes and instantly smooths the hair

  • The Smooth Transformer progressively restructures the hair fiber for long-lasting smoothness

  • The Mirror Serum seals the hair structure, protects against heat and humidity, and provides mirror-like shine

Together, these steps provide long-lasting smoothness without weighing down the hair.

How to use

  1. Shampoo: Apply to wet hair, massage in, and rinse out

  2. Mask: Use on regular wash days. Apply to lengths and ends, leave on for 5 minutes, and rinse out

  3. Smooth Transformer: Use once a week instead of the mask. Leave on for 10–15 minutes and rinse out

  4. Mirror Serum: Apply to towel-dried hair. Do not rinse out. Activate with heat by blow-drying or styling

Specifications

  • Hair type: All hair types

  • Result: Smooth, shiny, frizz-free hair

  • Use: Complete professional routine

  • Protection: Heat protection up to 230°C, anti-humidity

  • Contents: 4 products

Specifications
Brand
L'Oreal Professionnel
Specifications
Value sets
Variant
300+250+200+50ml
SKU
7062763291869
EAN
7062763291869

L'Oréal Keratin Alpha Sleek Complete Set - 300+250+200+50ml

The L’Oréal Professionnel Keratin Alpha Sleek Complete Set is a professional hair-smoothing care routine that keeps hair smooth, frizz-free, and manageable for up to 2 weeks.
€92,35 Regular price €120,00 You save €27,65
In stock · Order before 4 PM, delivered tomorrow
€50,00 to go for free shipping €0,00 / €50,00
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Have a question about this product?

Our specialists use these products themselves. Ask your question, we will answer within an hour.

Common question Can I use this product on its own?Yes. A shampoo or mask also works on its own; you’ll see results faster when used in combination.

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    Reviews

    Doet wat het belooft!

    Vanaf de eerste wasbeurt voel je een enorme verbetering in je haar. Ik ben fan!

    Anoniem· 2026-03-12
    Super goed

    Super goed,mijn haar is veel zachter en voelt ook veel gezonder aan. Pluist niet meer!! Eerste produkt dat echt werkt!

    Christel Thuriot· 2026-03-11

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