L'Oreal Serie Expert Keratin Alpha Sleek Duo

L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Duo is a professional two-step smoothing routine designed to cleanse, control frizz, and transform unruly hair into silky, sleek, and beautifully manageable locks. Combining the sulfate-free Keratin Alpha Sleek Shampoo with the innovative Progressive Treatment, this duo helps reshape the hair fibre, reduce styling time, and deliver long-lasting smoothness and shine for up to two weeks.* Ideal for frizzy, coarse, or difficult-to-manage hair, this salon-quality duo leaves hair feeling softer, stronger, and easier to style after every use.

Bundle includes:

• L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Shampoo 300ml
• L'Oréal Professionnel Serie Expert Keratin Alpha Sleek Progressive Treatment 200ml

Key benefits:

• Professional anti-frizz shampoo and smoothing treatment duo
• Provides up to 2 weeks of smoothness and frizz control when used together*
• Helps reshape the hair fibre for long-lasting sleekness
• Deeply hydrates while improving softness and shine
• Controls excess volume and flyaways
• Helps reduce styling time by up to 50%*
• Leaves hair smoother, more manageable, and easier to style
• Suitable for all hair types, including colour-treated hair

Why you'll love it:

• Sulfate-free shampoo gently cleanses without stripping moisture
• Progressive Treatment delivers long-lasting smoothing results
• Hair feels softer, shinier, and noticeably less frizzy
• Lightweight formulas won't leave hair feeling heavy
• Professional salon-quality results at home

How to use:

1. Apply the Keratin Alpha Sleek Shampoo to wet hair and massage into a rich lather.
2. Rinse thoroughly and repeat if required.
3. Apply the Progressive Treatment evenly through towel-dried hair.
4. Leave on for the recommended processing time before rinsing thoroughly.
5. Style as desired. Heat styling helps maximise the smoothing benefits.

FAQs

Who is this duo best suited for?
It is ideal for frizzy, coarse, thick, or difficult-to-manage hair, while also being suitable for all hair types looking for smoother, shinier results.

Is it safe for colour-treated hair?
Yes. The sulfate-free shampoo and smoothing treatment are suitable for colour-treated hair.

How long do the smoothing results last?
When used as the complete Keratin Alpha Sleek routine, results can last for up to two weeks.*

Will this make my hair feel heavy?
No. The lightweight formulas smooth and control the hair while maintaining natural movement, softness, and shine.

*Based on instrumental and consumer testing using the L'Oréal Professionnel Serie Expert Keratin Alpha Sleek routine.