L'Oréal Professionnel Paris KERATIN ALPHA SLEEK progressive treatment

Anti-frizz treatment - Keratin treatment - Hair products - Shiny hair treatment

L'Oréal Professionnel Paris
(1)
FAQ (4)
Features:
Expected delivery:
Tuesday 2026-07-21
Tuesday 2026-07-21

*Approximate for orders whose destination is the provincial capital. In other cases there will be a delay of 1 day.

Smooth Transformer Keratin Alpha Sleek Professional Anti-Frizz Treatment from L'Oréal Professionnel , formulated with Keratin-Alpha Shaping Agent and amino acid chains. Transforms hair: smoothness and frizz control for up to 2 weeks*** . Suitable for all hair types.

This professional anti-frizz treatment transforms hair, leaving it 5 times smoother, with 2 times less frizz, and volume control.** Hair is instantly 77% shinier.** Cuts styling time in half.* Hair integrity is preserved.**

Benefits:

70% of women said they had never before experienced this level of smoothness and that their hair had never been so disciplined and manageable. 82% said it had never taken them so little time to style their hair.

Smooth Transformer contains no artificial colors or alcohol.

*Instrumental test with a routine of 4 applications of Shampoo + Smooth Transformer + Mirror Sleek Serum.

**Instrumental tests

***Test conducted on 67 consumers after 4 applications.

How to use:
  1. Smooth Transformer is a progressive anti-frizz treatment. The more you use it, the better the results.
  2. Use once a week after shampooing. Best results are achieved after 4 weeks. Alternate with our hair mask on other wash days of the week.
  3. Shake well before use.
  4. Divide the hair into 2 sections and apply evenly from mid-lengths to ends in each section.
  5. Use 30 to 50 grams depending on the thickness and length of your hair.
  6. Leave on for 10-15 minutes and rinse.
  7. Complete the routine with the Keratin Alpha Sleek serum.
  8. To activate the softening technology, dry completely with a hairdryer and use an iron.
EAN
3474637335533
Hair
All hair types
Formulation
Alcohol Free
ingredients
aqua / water / eau, cetearyl alcohol, cocos nucifera oil / coconut oil, behentrimonium chloride, isononyl isononanoate, cetyl esters, parfum / fragrance, ethanolamine, isopropyl alcohol, cysteine, dimethicone, hydroxyethylcellulose, phenoxyethanol, sodium metabisulfite, amodimethicone, ascorbic acid, trideceth-10, trisodium ethylenediamine disuccinate, peg-100 stearate, rose ketones, steareth-6, taurine, trideceth-3, glycerin, butylene glycol, disodium phosphate, acetic acid, polysorbate 60, sodium phosphate, carbomer, sodium lactate, polysorbate 20, palmitoyl tripeptide-1, palmitoyl tetrapeptide-7 (f.i.l. n70068431/1).

The ingredient lists for our products are updated regularly. Please refer to the ingredient list on the packaging before using the product.

Brand Safety Warning
For external use only. In case of contact with eyes, rinse with water and keep out of reach of children.
Legal information of the brand
L’Oréal Professionnel, 14, rue Royale, 75008, París
https://www.loreal.com/es-es/espana/
corpes.contacto.loreal@loreal.com

Assessment L'Oréal Professionnel Paris - KERATIN ALPHA SLEEK progressive treatment

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Reviews L'Oréal Professionnel Paris - KERATIN ALPHA SLEEK progressive treatment

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Rating
5 4 3 2 1
Age
Between 18 and 25 years old Between 26 and 35 years old Between 36 and 50 years old More than 50 years old
Gender
Woman Man
Usage time
Not specified Less than 6 months Between 6 months and 1 year Between 1 and 3 years Between 3 and 5 years More than 5 years
Hair type
Oily Dry Damaged Curly Dyed hair Hair highlights Blonde Without Volume Weak hair Seborrheic Straight hair
Virginie
02-06-2026
Favorite range since its launch
A major revolution for this brand that I’ve been using for years. I love this new range!
Translated by Google
Gender: Woman
Age: More than 50 years old
Country: FR
Has been using this product for: Less than 6 months
Hair type:
Dry, Blonde, Dyed hair, Hair highlights
Virginie recommends this product
Rate this product

FAQ L'Oréal Professionnel Paris - KERATIN ALPHA SLEEK progressive treatment

?
What benefits does L’Oréal Professionnel Keratin Alpha Sleek offer?
Translated by Google
-01-07-2026
It is a smoothing, disciplining and hydro-regulating treatment for the hair microarchitecture that guarantees:
• High-visibility mechanical straightening, meticulously and lastingly controlling volume.
• Biological repair of keratin, providing absolute comfort, softness and extreme resistance.
• Cutting-edge technical technology, making it a professional, safe and highly powerful option in hairdressing.
?
What is the technical usage guideline for a progressive straightening treatment?
Translated by Google
-10-06-2026
It is applied mechanically to the hair according to the treatment protocol, sealing it meticulously with heat, guaranteeing a structural transformation, absolute comfort and a professional result.
?
What kind of unruly hair is it designed for that needs discipline?
Translated by Google
-05-04-2026
It is meticulously developed for hair that requires high-visibility mechanical control and thorough biological repair, achieving a smooth, shiny and very silky finish.
?
How does L’Oréal Professionnel’s Keratin Alpha Sleek treatment work on hair?
Translated by Google
-20-01-2026
It is a technically demanding smoothing treatment that works mechanically by sealing the hair cuticle and biologically by rebuilding the fiber with keratin for a perfectly smooth and frizz-free finish.
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