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L'Oreal Professionnel

L'Oreal Professionnel Serie Expert Keratin Alpha Sleek Hair Serum 50ml
£22.80
RRP £28.50 (20% off)
Spend £25.00 more for FREE standard UK delivery.

Product Description

L'Oreal Professionnel Serie Expert Keratin Alpha Sleek Hair Serum (50ml) is a professional finishing serum designed to smooth, seal and protect the hair fibre while helping control frizz and unwanted volume. Formulated with 5% Keratin Sealer, this mirror-like smoothing serum works to seal the hair's keratin structure, leaving strands visibly smoother, shinier and easier to style. Used as part of the Keratin Alpha Sleek routine, it helps reprogram hair for up to 2 weeks of frizz control¹.

The heat-activated formula enhances shine and protects the hair fibre while supporting smoother styling results. It helps defend against humidity and heat damage while improving overall manageability, leaving hair glossy, controlled and polished without heaviness. Artificial colourant-free and alcohol-free, it delivers professional smoothing performance with a lightweight finish.

Key Benefits:

  • Helps reprogram hair for up to 2 weeks of frizz control¹.
  • Up to 5x smoother hair and 2x less frizz².
  • Helps control unwanted volume for easier styling.
  • Supports styling routines that take half the time³.
  • Provides instant shine that can last up to 5 day.
  • Helps protect hair against up to 80% humidity.
  • Provides heat protection up to 230°C.

Claims:

  • ¹Instrumental test after 4 uses of Smooth Transformer.
  • ²Instrumental tests with routine used 4 times: Shampoo + Smooth Transformer + Leave-on.
  • ³Consumer test on 68 participants, 1 application per week for 4 weeks. Based on a 15-day break observation.
  • Instrumental test after 1 application of shampoo, mask and serum.
  • Instrumental tests with full routine after 4 uses of Smooth Transformer.
  • Instrumental tests.

How To Use
  • Apply a small amount evenly through lengths and ends of damp hair.
  • Blow-dry to activate the smoothing effect.
  • For longer-lasting results, use a straightening iron after drying.
  • Use as part of the Keratin Alpha Sleek routine.

Ingredients & Product Highlights

The list of ingredients is subject to change, it is recommended to review the ingredient list printed on the packaging of the product prior to usage or consumption. If the ingredient list doesn't load below, please email our customer care team and we'll send an image of the packaging.

Delivery & Returns

Justmylook offers free delivery on all UK orders over £25 via Royal Mail 48 Tracked. We offer free next-day delivery on all orders over £80 via Royal Mail 24 Tracked.

Royal Mail 24 is the only service that will be dispatched for next day delivery on a Sunday.

To see our returns policy, please click here.

We have a variety of express services available.

Royal Mail 48 Tracked: Orders placed before 6:00 pm are dispatched the same day Mon-Fri, and 2:00 pm Sat. Orders after this threshold will be dispatched the next working day. Delivery takes 2 days, including Saturdays. This service is free for orders over £25, orders under £25 will be subject to a £2.99 delivery charge.

Royal Mail 24 Tracked: Orders placed before 10:00 pm Mon-Fri, before 2pm Saturday and before 12pm Sunday are dispatched the same day. Orders after this threshold will be dispatched the next working day. Delivery will take place the next day, including Saturdays & Sundays. This service is free for orders over £80. The charge for this service is £1.99 for orders between £25.00 - £79.99, and £3.99 for orders under £25.

Royal Mail Special Delivery: Orders placed before 10:00 pm are dispatched the same day Mon-Fri, and 2:00 pm Sat. Orders after this threshold will be dispatched the next working day. Delivery will take place the next day, including Saturdays & Sundays. The charge for this service is £5.99.

DPD: Orders placed before 2:00 pm are dispatched the same day Mon-Fri. Orders after this threshold will be dispatched the next working day. Delivery will take place the next working day. The fee for this service is £5.99.

Republic of Ireland: Orders placed before 10:00 pm are dispatched the same day Mon-Fri. Orders after this threshold will be dispatched the next working day. Delivery usually takes 3-5 days. This service is free for orders over €60, orders under €60 will be subject to a €3.95 delivery charge. We pre-pay all international custom/duty charges on the behalf of our customers.

Please note it is not currently possible to offer a next-day delivery service to the below postcodes for orders placed after 5:00 pm. AB, BT, DD, DG5-9 & 10-16, FK17-21, G58, G60, G62, G63, G65, G71-84, GY, HS, IM, IV, JE, KA, KW, KY10, KY14-16, ML10-12, PA20-38, PA41-49, PA60-78, PH, PO30-41, TD, TR21-25, ZE.

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