LOreal Professionnel Keratin Alpha Sleek Serum is a heat-activated finishing treatment that locks in long-lasting smoothness and a mirror-like shine. A few drops transform frizz-prone hair into sleek, glossy lengths. Formulated with 5% Keratin Sealer, it seals the hair's keratin structure to control frizz and unwanted volume while shielding against humidity and heat styling. The smoothing effect lasts for up to 10 washes. Lightweight and non-greasy, it is the perfect finishing step for an effortlessly polished, salon-smooth result at home.
LOreal Professionnel Keratin Alpha Sleek Serum is a heat-activated finishing treatment that locks in long-lasting smoothness and a mirror-like shine. A few drops transform frizz-prone hair into sleek, glossy lengths. Formulated with 5% Keratin Sealer, it seals the hair's keratin structure to control frizz and unwanted volume while shielding against humidity and heat styling. The smoothing effect lasts for up to 10 washes. Lightweight and non-greasy, it is the perfect finishing step for an effortlessly polished, salon-smooth result at home.
in 54 offers
The lowest price for L'Oreal Professionnel Keratin Alpha Sleek Serum right now is $47.40 at EV Hair & Beauty, compared across 46 retailers.
The all-time low was $33.98 on 6 Sept 2026 — today's price is 39% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 6 Nov 2026.
L'Oreal Professionnel Keratin Alpha Sleek Serum
LOreal Professionnel Keratin Alpha Sleek Serum is a heat-activated finishing treatment that locks in long-lasting smoothness and a mirror-like shine. A few drops transform frizz-prone hair into sleek, glossy lengths. Formulated with 5% Keratin Sealer, it seals the hair's keratin structure to control frizz and unwanted volume while shielding against humidity and heat styling. The smoothing effect lasts for up to 10 washes. Lightweight and non-greasy, it is the perfect finishing step for an effortlessly polished, salon-smooth result at home.
LOreal Professionnel Keratin Alpha Sleek Serum is a heat-activated finishing treatment that locks in long-lasting smoothness and a mirror-like shine. A few drops transform frizz-prone hair into sleek, glossy lengths. Formulated with 5% Keratin Sealer, it seals the hair's keratin structure to control frizz and unwanted volume while shielding against humidity and heat styling. The smoothing effect lasts for up to 10 washes. Lightweight and non-greasy, it is the perfect finishing step for an effortlessly polished, salon-smooth result at home.
Last updated at 06/11/2026 06:39:17
L’Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Anti-Frizz Serum
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Loreal Serie Expert Keratin Alpha Sleek Mirror Sleek Serum 50ml
Delivery between 10–18 Nov $7.95
L'Oreal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery $14.95
L'Oreal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery between 16–20 Nov $12.95
L'Oréal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery between 13–17 Nov $10.95
L'Oréal Professionnel Série Expert Keratin Alpha Sleek Serum 50ml
Delivery between 12–18 Nov $9.70
L'Oreal Professionnel Liss Unlimited Serum 125ml - Budget Salon Supplies Retail
Delivery between 10–18 Nov $10
L'Oreal Professionnel Serie Expert Keratin Alpha Oil 50ml
Delivery between Mon – Tue $9.99
L'Oreal Professionnel Serie Expert Keratin Alpha Oil 50ml
Delivery between Sat – Mon $9.99
L'Oréal Professionnel Keratin Alpha Sleek Keratin Sealer 5% Mirror Sleek Serum 50ml
Delivery $9.95
| Brand | L'Oréal Paris |
| Type | Spray, Serum |
| Purpose | Shine Enhancing, Straightening, Heat Protecting, Moisturising, Smoothing |
| Alcohol-free | Yes |
| Ingredients | Keratin |
L’Oréal Professionnel Keratin Alpha Sleek Mirror Sleek Anti-Frizz Serum
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Loreal Serie Expert Keratin Alpha Sleek Mirror Sleek Serum 50ml
Delivery between 10–18 Nov $7.95
L'Oreal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery $14.95
L'Oreal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery between 16–20 Nov $12.95
L'Oréal Serie Expert Keratin Alpha Sleek Serum 50ml
Delivery between 13–17 Nov $10.95
| Brand | L'Oréal Paris |
| Type | Spray, Serum |
| Purpose | Shine Enhancing, Straightening, Heat Protecting, Moisturising, Smoothing |
| Alcohol-free | Yes |
| Ingredients | Keratin |
