• Before and after comparison of hair treatment with a woman's hair shown, followed by L'Oreal Keratin Alpha Sleek products.
  • Purple and blue spherical graphic with text about Keratin Alpha-shaper and amino acid chains on a black background.
  • Frizz control test with hair samples labeled 'Without Keratin Alpha Sleek', 'With Keratin Alpha Sleek', and 'After 2 weeks post use' on a white background.
  • Three strands of hair labeled 'Before', 'After', and 'After 2 weeks' on a white background with text about frizz control.
  • L'Oreal Keratin Alpha Sleek hair care products with step-by-step guide on a white background
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L'Oréal Professionnel Keratin Alpha Sleek Hair Mask

L'Oréal Professionnel Keratin Alpha Sleek Hair Mask

29945

Size
£21.95
£21.95
Sale Sold out (£26.34 Inc. VAT)
Shipping calculated at checkout.

L'Oréal Professionnel Keratin Alpha Sleek Hair Mask is an intensive smoothing treatment designed to control frizz, improve manageability and enhance shine. Ideal for unruly or chemically treated hair, it helps maintain sleek, polished results while leaving the hair feeling soft and nourished.

  • Intensive smoothing treatment for frizz-prone hair
  • Helps maintain keratin-treated and chemically smoothed hair
  • Improves softness, shine and manageability
  • Supports long-lasting sleek results
  • Professional-grade conditioning care
Step 1
Shampoo Cleanse & prepare
Step 2
Mask Smooth & condition
Step 3
Treatment Transform & control
Step 4
Serum Finish & protect
Product Overview

This professional smoothing mask delivers deep conditioning to help control frizz and improve hair texture. Designed to maintain sleek results, it enhances softness, shine and overall manageability.

Key Features
  • Deep conditioning smoothing formula
  • Helps reduce frizz and flyaways
  • Supports long-lasting smoothness
  • Enhances shine and softness
  • Improves manageability without heaviness
How to Use
  • Apply to clean, damp hair after shampooing
  • Distribute evenly through mid-lengths and ends
  • Leave for 3–5 minutes
  • Rinse thoroughly
  • Use regularly to maintain smoothness and control
Build Your Smoothing Routine

For best results, use as part of a structured smoothing routine:

  • Step 1: Cleanse with Keratin Alpha Sleek Shampoo
  • Step 2: Apply the Smoothing Mask
  • Step 3: Use treatment to support long-term smoothness
  • Step 4: Finish with serum for shine and control

This routine helps maintain smoother, more manageable hair between salon services.

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