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L'Oréal Professionnel Keratin Alpha Sleek hair serum 50 ml

Name: L'Oréal Professionnel Keratin Alpha Sleek hair serum 50 ml
Brand: L'OREAL PROFESSIONNEL
SKU: 3474637335601
Price: 28.48 EUR
Availability: InStock

Reference 3474637335601

In stock: >5

€28.48 €33.50 -15%

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Smoothing serum for frizz control and a smoother, shinier finish. The lightweight formula complements the Keratin Alpha Sleek care system and helps protect hair during styling.

L'Oréal Professionnel Keratin Alpha Sleek serum 50 ml is a leave-in Keratin Alpha Sleek serum for longer-lasting smoothness, frizz and volume control, with heat protection up to 230°C and a shine effect.

Key benefits

Product type: serum.
Designed for all hair types and longer-lasting frizz and volume control.
The shampoo is free from sulphate surfactants; the mask intensely nourishes and smooths.
The serum provides heat protection up to 230°C and control of humidity-induced frizz.
The full routine is designed to maintain a smooth effect for up to 2 weeks.
Pack size: 50 ml.
The 5% Keratin Sealer formula helps seal the hair surface, providing smoothness and volume/frizz control for up to 10 washes.
Provides humidity protection, heat protection up to 230°C and helps reduce daily styling time.

Active ingredients and technology

Keratin-alpha shaper and amino-acid chains are the system's key technology elements. The products do not contain added keratin as an animal-derived ingredient; they are designed to act on the hair's natural keratin alpha structure.

Serum: function and professional use

Leave-in Keratin Alpha Sleek serum for longer-lasting smoothness, frizz and volume control, with heat protection up to 230°C and a shine effect.

How to use the product?

Basic use: Shake well before use. Divide clean, towel-dried hair into 2 sections. Start with 2–4 sprays for fine hair and 6–8 for thick hair; first spray the product into the palm and distribute evenly from lengths to ends. Do not rinse.

For this product: Mirror Sleek Serum is a heat-activated leave-in serum. After application, blow-dry hair completely; for maximum long-lasting smoothness, use a straightener after drying. Do not use the serum as a rinse-out mask or conditioner.

Technical information

Brand: L'Oréal Professionnel
Range: Keratin Alpha Sleek
Product type: serum
Volume / weight: 50 ml
EAN / GTIN: 3474637335601
model: 3474637335601

Who is this product suitable for?

For all hair types when the priority is longer-lasting smoothness, easier daily styling and control of frizz and unwanted volume.

Frequently asked questions

What is this product intended for?

For all hair types when the priority is longer-lasting smoothness, easier daily styling and control of frizz and unwanted volume.

How should the product be incorporated into a care or styling routine?

Use it according to the specific product directions and recommended sequence — after cleansing, as a leave-in product, or before or after styling. Adjust the amount to the hair length, thickness and needs.

INCI ingredients

DIMETHICONE, BIS-(MORPHOLINOMETHYL C1-4 DIALKOXYSILOXY) DIMETHICONE, BIS-CETEARYL AMODIMETHICONE, PARFUM / FRAGRANCE, LINALOOL, CITRONELLOL, GERANIOL.

Note: ingredients may be updated; before use, compare with the INCI list on the specific product packaging.

Volume: 0-50ml
Properties: Hair straightening and smoothing
Smoothing (anti-frizz)
Hair type/condition: For unmanageable hair
Ingredients: Keratin

About L’Oréal Professionnel

L’Oréal Professionnel Paris is a professional hair brand whose origins date to Paris in 1909. Its history is linked to chemist Eugène Schueller, who developed hair colour and built the business around the needs of professional hairdressers. That relationship with salon professionals remains central to the brand today.

The portfolio spans professional haircare, colouring and styling products for salons, hairdressers and customers who want to maintain professional hair results at home.

What is L’Oréal Professionnel known for?

Science, technical expertise and innovation have played a central role throughout the brand’s history. Its professional innovations range from early developments in hair colour to contemporary systems such as iNOA and Metal Detox, alongside advanced care and styling ranges.

Metal Detox uses Glicoamine technology developed to neutralise metal particles inside the hair fibre and reduce the unwanted effects associated with metals during colour, balayage and lightening services. Other ranges address needs including damaged or chemically treated hair, colour maintenance, blonde hair, curls and scalp care.

L’Oréal Professionnel products

The range includes professional shampoos, conditioners, masks, serums, oils and leave-in care. The current SalonLine assortment can be explored on the L’Oréal Professionnel brand page.

Serie Expert haircare

Serie Expert brings together targeted routines for different hair needs. Metal Detox focuses on the effects of metal particles in hair, while other ranges provide specialised routines for damaged, coloured, blonde, curly or scalp-focused haircare.

Professional colour and styling

The professional colour portfolio includes permanent and tone-on-tone colour systems, lightening products and related salon products. SalonLine also offers a dedicated category for permanent hair colours. For hold, texture, shape, volume and finish, customers can also explore professional hair styling products.

Who are L’Oréal Professionnel products for?

The range is relevant to professional hairstylists and salons as well as customers looking for targeted, salon-led haircare at home. Depending on the individual range, routines can be selected for damaged, coloured, bleached, curly or unruly hair, scalp needs, professional colour services and styling.