L'Oreal Professionnel Serie Expert Keratin Alpha Sleek Serum - 50 ml
L'Oréal Professionnel
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A professional heat-activated finishing serum from L'Oreal Professionnel's Serie Expert Keratin Alpha Sleek range, formulated with 5% Keratin Sealer to smooth, seal and protect frizz-prone hair. Best used as the final step of the full routine with the Keratin Alpha Sleek Shampoo and Keratin Alpha Sleek Hair Mask.
Key Features
- 5% Keratin Sealer for a mirror-like smoothing finish
- Heat protection up to 230°C and humidity defence up to 80%
- Helps reprogram hair for up to 2 weeks of frizz control
- Lightweight, alcohol-free and artificial colourant-free formula
SKU: CB009453
Free delivery is available on orders over £70!
Delivery cut off for next day delivery is 3:30pm Monday to Friday
| Where? | How? | Time | Cost |
|---|---|---|---|
| Our Store (Local Pickup) | Click & Collect / Pickup from store | Ready in 2–4 hours | FREE |
| All UK | Royal Mail 48 | 2–3 days | from £4.99 |
| England, Wales, Lowland Scotland | DPD Ship to Shop | 1 day | from £5.99 |
| England, Wales, Lowland Scotland | DPD Next | 1 day | from £6.95 |
| Rest of UK | Royal Mail 24 | 1–3 days | from £6.49 |
| Eire | DPD | 2–4 days | from £13.99 |
| Europe | FedEx | 2–10 days | from £14.61 |
| ROW | FedEx | Varies | Varies |
The L'Oreal Professionnel Serie Expert Keratin Alpha Sleek Hair Serum is a lightweight, heat-activated finishing serum formulated to smooth, seal and protect the hair fibre against frizz, humidity and heat damage. Containing 5% Keratin Sealer, the mirror-like formula works to lock down the hair's keratin structure, delivering a glossy, controlled finish without weight or residue. Free from artificial colourants and alcohol, it is the ideal final step in the Keratin Alpha Sleek routine — use it after cleansing with the Keratin Alpha Sleek Shampoo and conditioning with the Keratin Alpha Sleek Hair Mask to help reprogram hair for up to two weeks of frizz control.
Key Features
- Formulated with 5% Keratin Sealer to seal the hair's keratin structure
- Heat-activated formula that enhances smoothness when blow-dried or straightened
- Helps reprogram hair for up to 2 weeks of frizz control with continued use
- Delivers up to 5x smoother hair and 2x less frizz
- Provides humidity protection against up to 80% humidity
- Offers heat protection up to 230°C
- Instant shine lasting up to 5 days
- Lightweight, non-heavy finish — artificial colourant-free and alcohol-free
- Helps control unwanted volume for polished, manageable results
Additional Specs
- Size: 50ml
- Artificial colourant-free
- Alcohol-free
Directions
Work a small amount evenly through the lengths and ends of damp hair. Blow-dry to activate the serum's smoothing effect. For longer-lasting results, follow with a straightening iron after drying. For best results, use as the finishing step of the full Keratin Alpha Sleek routine alongside the Keratin Alpha Sleek Shampoo and Keratin Alpha Sleek Hair Mask.