L'Oréal Keratin Alpha Sleek Shampoo 300ml + Refill 500ml Kit

The L'Oréal Professionnel Keratin Alpha Sleek Shampoo 300ml + Refill 500ml is the convenience kit designed for those who want to start with the standard 300ml size and already have the 500ml Refill ready, so they never run out. A total of 800ml of professional sulfate-free anti-frizz shampoo, with savings compared to purchasing the two sizes separately.

The difference compared to the 500ml + Refill kit

This kit is ideal for those who are trying Keratin Alpha Sleek shampoo for the first time and prefer to start with the 300ml size — more manageable and practical in the shower — immediately paired with the 500ml Refill to have a ready supply. Those who already use the product and prefer the large bottle can opt for the kit with 500ml bottle + Refill.

Shampoo features

The Keratin Alpha Sleek Shampoo by L'Oréal Professionnel is a professional sulfate-free cleanser, formulated with Keratin-Alpha Shaper technology and amino acid chains. Its rich and ultra-creamy texture gently cleanses the hair fiber without stripping it, 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 color-treated 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 porosity responsible for swelling.

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

Who is it for?

This kit is suitable for frizzy, wavy, unruly hair, or hair prone to humidity, on all textures. To complete the anti-frizz ritual, pair it with the Keratin Alpha Sleek Mask and the Mirror Sleek Serum, or directly choose the 4-product Anti-Frizz Kit with the complete routine.

How to use

Apply 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 it 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 convenience kit is available exclusively online.

Frequently asked questions

Should the 500ml Refill be used directly or poured into the 300ml bottle?
The Refill is designed to replenish the original bottle once it's empty. You can also use it directly if you prefer.

What is the difference between this kit and the one with the 500ml bottle?
The 300ml size is more compact and practical for daily shower use. The 500ml kit is ideal for those who are already regular users and prefer the large bottle from the start.

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

How long does the kit last?
With regular use 3-4 times a week, 800ml of shampoo lasts approximately 3 months on average.