The set contains three products, each with its own role in the same routine. You'll find them combined in one of the most complete anti-frizz sets in our range of hair products.

• Three products for one targeted daily routine
• Sulphate-free shampoo gently cleanses without drying out
• Smooth Transformer works progressively: results build up over time
• Mask boosts treated days with smoothness and nourishment
• Suitable for all hair types, including colour-treated hair
• Hair feels smoother without stiffness or heaviness
• Less styling time needed, even on regular wash days
• Based on keratin and amino acid chains for the hair fibre

The set works on a fixed schedule. The more closely you follow it, the better the results after four weeks. Suitable for anyone with coarse, frizz-prone, or hard-to-manage hair.

1. Wash your hair with the Keratin Alpha Sleek Professional Shampoo 300 ml. Apply on wet hair, massage well, and rinse thoroughly.
2. Use the Keratin Alpha Sleek Smooth Transformer 200 ml once a week after washing. Distribute through lengths and ends and leave on for 10 to 15 minutes. Rinse out afterwards.
3. Always blow-dry your hair after the Smooth Transformer. Heat activates the formula and enhances the smoothing effect.
4. On wash days when you don't use the Smooth Transformer, reach for the Keratin Alpha Sleek Professional Mask 250 ml. Leave on for a few minutes before rinsing.
5. Repeat this schedule for four weeks for the best result. According to L'Oréal Professionnel, you peak after four uses of the Smooth Transformer.

If you want to complement your haircare with intense molecular-level repair, check out the Absolut Repair Molecular Hair Repair Discovery Trio Set to enhance your routine.

Your hair gets smoother week after week, frizz decreases, and styling becomes faster. This builds up because the Smooth Transformer uses a keratin-alpha shaper and amino acid chains that, according to L'Oréal Professionnel, restructure the hair fibre at the keratin level.

The sulphate-free shampoo prepares the hair without stressing the fibre, allowing better absorption of the treatment. After four weeks, the brand claims up to five times smoother hair, half the styling time, and twice less frizz, based on instrumental tests of the full routine including serum. Even with just the three products in this set, you will notice a clear difference. If you regularly choose L'Oréal Professionnel, you know the brand backs its claims with its own test results.

According to L'Oréal Professionnel, smoothness lasts up to two weeks after using the full routine. This is a brand claim based on instrumental and user tests.

In practice, this means your hair stays recognisably smooth and less frizzy between the weekly uses of the Smooth Transformer. The mask on the in-between wash days helps support that effect. How consistently you follow the routine largely determines how long and how strong the result lasts.

Yes, L'Oréal Professionnel positions this line as suitable for all hair types, including colour-treated hair. The sulphate-free shampoo is part of that: sulphate-free formulas are generally gentler on coloured hair.

If you have very fine or low-volume hair, it’s wise to limit the amount of Smooth Transformer. Users with fine hair sometimes report that intensive smoothing products can make hair too flat. Start with a small amount and see how your hair responds.

The Smooth Transformer is the core of the routine: a weekly, progressive treatment with the strongest Smoothing effect. The mask is the nourishing supplement for all other wash days.

The Smooth Transformer builds up over four weeks for maximum effect and needs heat to work optimally. The Keratin Alpha Sleek Professional Mask 250 ml is a classic intensive mask that provides smoothness and nourishment but without the progressive protocol of the treatment. Together they ensure your hair stays in good condition even between treatments.

The brand aims the line at all hair types, but the set works best for hair that is naturally thick, frizz-prone, or hard to tame. Think of hair that instantly expands in humidity, voluminous hair you prefer to keep more controlled, or hair that springs back quickly after blow-drying.

For damaged hair that breaks easily or needs intensive repair, the Absolut Repair Molecular Mask is a better match. That line focuses on hair reconstruction, whereas Keratin Alpha Sleek centres on smoothness and frizz control. Want to know if Keratin Alpha Sleek suits your curls? The line doesn’t remove curl Manent and works progressively, so effects vary among those with curly hair.

Have a question about the L'Oréal Professionnel Keratin Alpha Sleek Smooth Trio Set - 300+200+250ml or want to know which products suit your hair best? Email us at info@haarspullen.nl or call during office hours. We’re happy to help you pick the right routine.

Also sign up for our newsletter and be the first to get news about new products, tips, and offers. Order from €35 or more and enjoy free shipping. For everyone wanting to tackle frizz, this set is a solid starting point.