FREE UK delivery on orders over £25 Download our App 12-months Premier Delivery - Only £5.95! Join LF Beauty Plus+
22% Off Selected | Use Code: FLASH22
L'Oréal Professionnel

L'Oréal Professionnel Keratin Alpha Sleek Hair Serum Anti Frizz, Smoothing & Glass Shine 50ml

Get 143 LF Beauty Plus+ Points

Join Loyalty program

£28.50

Or 3 interest free payments of £9.50 with

paypal_in_3
Dispatching From : 1 April 2026

Image 10 - Frizz control test under 80% humidity, showing three hair samples: a frizzy strand labeled Witout Keratin Alpha Sleek, a sleek strand labeled With Keratin Alpha Sleek¹, and a slightly less sleek but still smooth strand labeled After 2 weeks post use¹, with the footnote ¹ After 4 applications of Keratin Alpha Sleek Smooth Transformer. Image 11 - An image displays three black hair strands hanging against a white background: a wavy strand labeled Before, a straight smooth strand labeled After¹, and a mostly straight strand labeled After 2 weeks, with text at the top stating 2 weeks of smooth, frizz controlled hair.¹ and a footnote at the bottom that reads ¹After 4 applications of Keratin Alpha Sleek Smooth Transformer on 67 consumers. Image 2 - A purple bottle of LOréal Professionnel Keratin Alpha Sleek serum is displayed on a light background with abstract purple shapes, featuring text that highlights its benefits: Protects from heat. Heat protection up to 230C.¹ Anti-humidity: Up to 80%.¹ Long-lasting smoothness, up to 10 washes. The bottle label also reads LORÉAL PROFESSIONNEL PARIS Keratin Alpha Sleek KERATIN SEALER 3% PROFESSIONAL MIRROR SLEEK SERUM Smoothness. Heat Activated. Smoothness, frizz & volume control up to 10 washes. SERIE EXPERT 50 mL 1.7 FL. OZ., along with a small disclaimer ¹Instrumental test. Image 3 - A split image of a woman shows her hair with curly frizz on the left labeled Before, and smooth straight hair on the right labeled After 3 Uses, with three purple LOreal Keratin Alpha products at the bottom right, and text Not retouched. Image 4 - A glossy purple and blue iridescent blob shape on a black background displays the text THE TECH, Keratin Alpha-shaper + amino acid chains, Reprograms hair at deepest keratin alpha level, and By working deep inside the hair fiber, it reshapes the structure of your hair, with a small circular inset showing magnified hair strands. Image 5 - A stylized image of fragrance ingredients featuring sliced figs, purple flowers, dark wood, and purple liquid elements, with accompanying text labels that read The fragrance, Orris and violet, Fig leaf, and Creamy sandalwood. Image 6 - A hand with a drop of liquid product in the palm illustrates instructions on how to apply the product, which read: How to apply like a Pro. 01 Take 2-3 pumps for thin/medium & 6-8 pumps for thicker hair. 02 Distribute product evenly. 03 Blow dry or flatiron to activate the formula. Image 8 - Three purple LOréal Professionnel Keratin Alpha Sleek hair products are displayed on a white background, a shampoo bottle, a mask jar, and a serum bottle, each with a dollop of white product representing its texture, demonstrating a three-step anti-frizz routine, with visible text that reads: The anti-frizz routine. LORÉAL PROFESSIONNEL PARIS Keratin Alpha Sleek KERATIN-ALPHA SHAPER + AMINO-ACID CHAIN SHAMPOOING PROFESSIONNEL Développé pour le cheveu pour lisser la fibre Long-lasting smooth, anti-frizz & volume control PROFESSIONAL SHAMPOO SERIE EXPERT 300 ml 10.1 fl.oz. 01 Cleanse. LORÉAL PROFESSIONNEL PARIS Keratin Alpha Sleek KERATIN-ALPHA SHAPER + AMINO-ACID CHAIN MASQUE PROFESSIONNEL / PROFESSIONAL MASK Lissage longue durée, anti-frizz & volume control Long-lasting smooth, anti-frizz & volume control SERIE EXPERT 250 ml 8.5 fl.oz. 02 Moisturize. LORÉAL PROFESSIONNEL PARIS Keratin Alpha Sleek KERATIN-ALPHA SHAPER PROFESSIONNEL SERUM FLUIDE Soin lissant sans rinçage Lissage longue durée, anti-frizz & volume control SERIE EXPERT. 03 Smoothness.