L'Oréal Professionnel Paris Keratin Alpha Sleek Shampoo - Sulfate-Free Smoothening, Hydrating 250ml

L'Oréal Professionnel Keratin Alpha Sleek Shampoo is a sulfate-free, ultra-creamy cleanser formulated with Keratin-Alpha Shaper and amino-acid chains to smooth, hydrate and reduce frizz for long-lasting sleekness.

This professional shampoo is designed to reshape and reinforce the hair keratin structure while gently removing buildup. Its rich, creamy texture cleans without stripping, leaving strands softer, shinier and more manageable. The formula pairs easily with L'Oréal Professionnel’s Keratin Alpha Smooth Transformer and serum to extend smoothing effects and improve hydration and radiance after repeated use.

How does this shampoo smooth and strengthen hair?

The Keratin-Alpha Shaper and amino-acid chains target the hair fiber to promote a sleeker surface and improved cohesion along the strand. Rather than harsh detergents, the gentle cleansing base helps preserve the hair’s natural moisture while the active complex supports structure and smoothness.

• Keratin-Alpha Shaper acts on the hair cortex to reshape and reinforce keratin bonds.
• Amino-acid chains provide targeted support to the fiber, improving manageability.
• Sulfate-free formula maintains natural oils to prevent over-drying.

What noticeable benefits can I expect after using it?

Instrumental tests show the shampoo alone increases hydration and shine while softening the hair surface. With regular use and combination with other Keratin Alpha products, you can expect long-lasting smoothing, reduced frizz and better control of volume for more polished, camera-ready hair.

• Up to 50% more hydration and enhanced radiance after applications.*
• Softened texture and visibly smoother strands.
• Improved frizz control and manageable volume for styled looks.

Is it gentle enough for colored or treated hair?

The formulation avoids sulfated surfactants, alcohol and artificial colorants, making it suitable for many color-treated and chemically styled hair types. Its creamy, mild lather cleans without stripping, helping maintain color and the integrity of previous salon services when used as part of a professional care routine.

• Free of sulfated surfactants that can accelerate color fading.
• Alcohol- and artificial colorant-free to reduce drying effects.
• Creamy texture delivers a soft cleanse for treated hair.

What does it smell like and how does the texture feel?

The sensory profile pairs a powdery-floral fragrance with spicy and woody notes for a refined salon scent. The ultra-creamy texture lathers into a silky foam that spreads easily and rinses clean, leaving hair feeling soft rather than stripped.

• Top notes: cardamom and ginger for a subtle spice.
• Heart: orris adds a clean, floral powderiness.
• Base: sandalwood and musk for warm, lingering elegance.

Who is this product for? L'Oréal Professionnel Keratin Alpha Sleek Shampoo is suited to anyone seeking smoother, more hydrated hair with improved frizz and volume control—especially those with medium to long lengths, chemically treated or naturally unruly hair who want salon-grade results at home. Use it as the cleansing step in the Keratin Alpha Sleek routine to maximize smoothing and shine over repeated applications.

*Instrumental test results referenced by the brand: hydration and shine measured after applications of the shampoo and in combination with the Keratin Alpha Sleek system.

Ingredients

AQUA / WATER / EAU • SODIUM COCOYL ISETHIONATE • DISODIUM LAURETH SULFOSUCCINATE • GLYCOL DISTEARATE • SODIUM LAURYL SULFOACETATE • SODIUM LAUROYL SARCOSINATE • GLYCERIN • PARFUM / FRAGRANCE • DECYL GLUCOSIDE • COCAMIDOPROPYL BETAINE • COCO-BETAINE • PPG-5-CETETH-20 • DIVINYLDIMETHICONE/DIMETHICONE COPOLYMER • AMODIMETHICONE • SODIUM HYDROXIDE • CITRIC ACID • POLYQUATERNIUM-7 • CARBOMER • POLYQUATERNIUM-10 • SODIUM BENZOATE • SODIUM CHLORIDE • PEG-55 PROPYLENE GLYCOL OLEATE • PROPYLENE GLYCOL • SALICYLIC ACID • BENZOIC ACID • TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES • POLYSORBATE 21 • LINALYL ACETATE • CARVONE • CITRUS LIMON PEEL OIL • TRIDECETH-6 • LIMONENE • COUMARIN • LINALOOL • CITRUS AURANTIUM BERGAMIA PEEL OIL • BUTYLENE GLYCOL • C12-13 ALKETH-23 • C12-13 ALKETH-3 • PINENE • CETRIMONIUM CHLORIDE • JUNIPERUS VIRGINIANA OIL • PHENOXYETHANOL • SODIUM LACTATE • TAURINE • POLYSORBATE 20 • PALMITOYL TRIPEPTIDE-1 • PALMITOYL TETRAPEPTIDE-7