L'Oréal Keratin Alpha Sleek Shampoo 500ml + Refill 500ml Kit

The L'Oréal Professionnel Keratin Alpha Sleek Shampoo Value Kit is the most economical solution for those who daily use the professional anti-frizz shampoo from the Serie Expert line. The kit includes a 500ml bottle and a 500ml Refill — for a total of 1 liter of sulfate-free keratin shampoo, at a significant saving compared to buying separately.

Why choose the 500ml + Refill size

The value size is designed for those who have already tried Keratin Alpha Sleek shampoo and want to ensure a long-lasting supply without sacrificing professional quality. The Refill also reduces environmental impact due to less plastic use compared to two separate bottles.

Shampoo characteristics

L'Oréal Professionnel's Keratin Alpha Sleek Shampoo is a professional sulfate-free cleanser, formulated with Keratin-Alpha Shaper technology and amino acid chains. The rich, ultra-creamy texture gently cleanses the hair fiber without being aggressive, strengthening the hair's natural keratin.

• Softens and moisturizes hair from the first application
• Provides immediate and controlled shine
• Frizz and volume control for up to 2 weeks with the complete routine*
• Suitable for all hair types — fine, medium, and thick
• Compatible with colored or chemically treated hair

*Instrumental test after 4 applications of Keratin Alpha Sleek Shampoo + Smooth Transformer + Serum.

Active ingredients

Keratin-Alpha Shaper — patented complex that restructures the hair fiber, reduces frizz, and progressively improves manageability.

Amino acid chains — nourish and strengthen the hair from within, restoring the keratin structure and reducing the porosity responsible for swelling.

Sulfate-free formula — gently cleanses without stripping the hair of natural lipids, ideal for frequent use even on sensitive or colored hair.

Who is it for

This kit is designed for those who regularly use Keratin Alpha Sleek shampoo and want to always have a supply on hand. It is suitable for frizzy, wavy, unruly hair, or hair prone to humidity, across all textures. For a complete anti-frizz ritual, combine it with the Keratin Alpha Sleek Mask and the Mirror Sleek Serum, or choose the 4-product Anti-Frizz Kit for the complete routine.

How to use

Apply the shampoo to wet hair, gently massage the scalp, and distribute the product through the lengths. Rinse thoroughly. For optimal anti-frizz results, use regularly with the Smooth Transformer and Mirror Sleek Serum from the same line.

Why buy from Planethair

Planethair has been online since 2000 and was one of the first Italian e-commerce sites specializing in professional hair products. All L'Oréal Professionnel products are original and come from authorized distribution channels. The value kit is available exclusively online and represents the most convenient way to stock up on your favorite professional shampoo.

Frequently asked questions

Is the Refill used directly or poured into the bottle?
The Refill is designed to replenish the original 500ml bottle once it's empty, reducing plastic waste. You can also use it directly if you prefer.

Is it suitable for colored hair?
Yes, the sulfate-free formula is gentle and compatible with colored, bleached, or chemically treated hair.

Can I use it every day?
Yes, the formula is suitable for frequent use thanks to the absence of aggressive sulfates.

How long does the kit last?
With regular use 3-4 times a week, 1 liter of shampoo lasts an average of 3-4 months.