L'Oréal Professionnel Série Expert Keratin Alpha Sleek Hair Mask 250ml is a professional smoothing treatment designed to control frizz, reduce unwanted volume and leave hair visibly smoother and softer. Formulated with Keratin-Alpha shapers and amino-acid chains, this advanced salon mask helps seal the hair’s keratin structure while deeply hydrating the fibre for improved manageability and long-lasting shine.

With its rich, sensorial texture, the mask works to reduce visible frizz after just one use while delivering up to three times less unwanted volume. When used as part of the complete Keratin Alpha Sleek routine, it helps reprogramme hair for up to two weeks of frizz control, making daily styling quicker and easier for professionals and stylists.

• Professional smoothing hair mask with Keratin-Alpha shapers and amino-acid chains
• Helps reduce visible frizz and control unwanted volume
• Deeply hydrates and softens the hair fibre
• Leaves hair smoother, shinier and easier to style
• Helps protect hair from breakage while reinforcing keratin
• Delivers instant shine that can last up to 5 days
• Artificial colourant-free and alcohol-free formula
• Suitable for all hair types

How To Use:

• After shampooing, apply evenly to clean, wet hair
• Distribute through mid-lengths and ends, focusing on areas prone to frizz and volume
• Leave on for 3–5 minutes to allow the formula to smooth and hydrate the hair fibre
• Rinse thoroughly

Ideal for professional hairdressers and stylists, this smoothing hair mask helps create sleek, controlled styles while improving hair softness and manageability from the first use.

Delivery Info: Aston & Fincher works with our suppliers to ensure your orders are complete and delivered safely and on time. We offer standard delivery times of 1-3 working days, though it will usually be the next day. Any delivery queries, please email us on businessservices@afteam.co.uk or call 0345 201 0825

Free delivery applies to baskets with a value of £50+ ex. VAT (£60+ inc. VAT), to UK mainland addresses. It excludes furniture and exceptional items; we will contact you in these cases.

During our online VAT Free promotional period, free delivery applies to baskets with a value of £83.33 ex VAT, which is the same as £100+ inc VAT.

Furniture and Special Order Deliveries: Furniture and special-order items have different times based on availability and production hours. Please contact us for any queries.

Lead-times are therefore given as a guideline only. You will be advised of lead-times on placement of order, but if items are required by a specific date, please contact us before placing orders online.

Once an order has been placed, it can take up to 5 working days for Aston & Fincher to receive the manufacturer's production confirmation. This will have an approx. date of dispatch from the manufacturers.

At this stage, Aston & Fincher will contact you to give you an estimated delivery date to the UK.

For more information, please refer to the Terms and Conditions