“Refund was approved and back in my account the same day.” — Deliver+ customer
Our Diamond Sleek Shine-Coat Smoothing Spray, with its 8% Keratin Smoothing Complex and Argan Oil, shields and smooths hair to reduce frizz even in high humidity. It works by coating the hair fibre to boost light reflection from all angles, delivering a stunning diamond-like shine that lasts for up to 100 hours*. The lightweight, non-greasy, and non-sticky texture ensures a natural feel without any weigh-down. This heat-activated formula also provides essential protection from heat styling tools, including from blow drying and straightening, up to 230°C*.
For best results, use as a final step after the 3-step Keratin Sleek System. After the Shampoo, Conditioner, or Mask, apply Diamond Sleek Spray to achieve a long-lasting sleek look with incredible, polished shine. Vegan Formula**. Approved by Cruelty-Free International.
*Instrumental tests using standard shampoo + Diamond Sleek Spray **No animal-derived ingredients or by-products
INGREDIENTS: AQUA/WATER • GLYCERIN • DIPROPYLENE GLYCOL • PEG-60 HYDROGENATED CASTOR OIL • LAURETH-4 • ARGANIA SPINOSA KERNEL OIL • STEARAMIDOPROPYL DIMETHYLAMINE • SODIUM HYDROXIDE • ISONONYL ISONONANOATE • HYDROLYZED CORN PROTEIN • HYDROLYZED SOY PROTEIN • HYDROLYZED WHEAT PROTEIN • CAPRYLYL GLYCOL • LACTIC ACID • POLYSILICONE-29 • HEXYL LAURATE • PHENOXYETHANOL • PARFUM / FRAGRANCE (F.I.L. Z70073266/1).
Next Day Delivery
£2.99
UK Standard Delivery
£3.99
24/7 InPost Locker
£3.49
Northern Ireland Standard Delivery
£4.99
DPD Next Day Delivery
£6.99
Royalty - unlimited free delivery for a year with Royalty Delivery for £9.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times
Extended returns Orders placed from Oct 29, 2026 have until Jan 5, 2027 to return their order
Something not quite right? You have 21 days from the day you receive it, to send something back.
Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys and swimwear or lingerie if the hygiene seal is not in place or has been broken.
Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.
Click here to view our full Returns Policy.
Our Diamond Sleek Shine-Coat Smoothing Spray, with its 8% Keratin Smoothing Complex and Argan Oil, shields and smooths hair to reduce frizz even in high humidity. It works by coating the hair fibre to boost light reflection from all angles, delivering a stunning diamond-like shine that lasts for up to 100 hours*. The lightweight, non-greasy, and non-sticky texture ensures a natural feel without any weigh-down. This heat-activated formula also provides essential protection from heat styling tools, including from blow drying and straightening, up to 230°C*.
For best results, use as a final step after the 3-step Keratin Sleek System. After the Shampoo, Conditioner, or Mask, apply Diamond Sleek Spray to achieve a long-lasting sleek look with incredible, polished shine. Vegan Formula**. Approved by Cruelty-Free International.
*Instrumental tests using standard shampoo + Diamond Sleek Spray **No animal-derived ingredients or by-products
INGREDIENTS: AQUA/WATER • GLYCERIN • DIPROPYLENE GLYCOL • PEG-60 HYDROGENATED CASTOR OIL • LAURETH-4 • ARGANIA SPINOSA KERNEL OIL • STEARAMIDOPROPYL DIMETHYLAMINE • SODIUM HYDROXIDE • ISONONYL ISONONANOATE • HYDROLYZED CORN PROTEIN • HYDROLYZED SOY PROTEIN • HYDROLYZED WHEAT PROTEIN • CAPRYLYL GLYCOL • LACTIC ACID • POLYSILICONE-29 • HEXYL LAURATE • PHENOXYETHANOL • PARFUM / FRAGRANCE (F.I.L. Z70073266/1).
Next Day Delivery
£2.99
UK Standard Delivery
£3.99
24/7 InPost Locker
£3.49
Northern Ireland Standard Delivery
£4.99
DPD Next Day Delivery
£6.99
Royalty - unlimited free delivery for a year with Royalty Delivery for £9.99
Please note, some delivery methods are not available for products delivered by our brand partners & they may have longer delivery times
Extended returns Orders placed from Oct 29, 2026 have until Jan 5, 2027 to return their order
Something not quite right? You have 21 days from the day you receive it, to send something back.
Please note, we cannot offer refunds on fashion face masks, cosmetics, pierced jewellery, adult toys and swimwear or lingerie if the hygiene seal is not in place or has been broken.
Items of footwear and/or clothing must be unworn and unwashed with the original labels attached. Also, footwear must be tried on indoors. Items of homeware including bedlinen, mattresses and toppers, and pillows must be unused and in their original unopened packaging. This does not affect your statutory rights.
Click here to view our full Returns Policy.
“Refund was approved and back in my account the same day.” — Deliver+ customer
Extend your warranty and protect your purchase against accidental damage and defects.
Protects your new Keratin Diamond Sleek Spray 150ml against breakdowns and faults once the manufacturer's warranty period is over.
Covers issues not included in your manufacturer's warranty, such as accidental damage or theft.
Get a replacement or a cash refund up to the full amount you originally paid for it.
By selecting 'add protection', I confirm that I am a UK resident aged 18+ and that I have read the IPID and Terms and Conditions. I consent to receive this information electronically.