For frizz-prone and dry hair, achieve a long-lasting sleek look with the Garnier Keratin Sleek range. This Keratin Sleek Hair Mask is an intensive treatment powered by a 13% Keratin Smoothing Complex and nourishing Argan Oil. This rich, frizz-free formula works to intensely smooth the hair fibre from root to tip, providing frizz control while boosting shine and leaving hair feeling up to 10 times smoother*. Use this mask as part of the complete Keratin Sleek System. After cleansing with the Shampoo, apply this mask 1-2 times a week in place of the Conditioner for a deep treatment that leaves hair intensely smooth and shiny, before finishing with the Diamond Sleek Shine-Coat Smoothing Spray for a long-lasting sleek look with diamond-like shine. Vegan Formula**. Approved by Cruelty-Free International.
*Instrumental test after application of standard shampoo + mask
**No animal-derived ingredients or by-products
*** Instrumental test after use of shampoo + conditioner + mask as a leave on
For frizz-prone and dry hair, achieve a long-lasting sleek look with the Garnier Keratin Sleek range. This Keratin Sleek Hair Mask is an intensive treatment powered by a 13% Keratin Smoothing Complex and nourishing Argan Oil. This rich, frizz-free formula works to intensely smooth the hair fibre from root to tip, providing frizz control while boosting shine and leaving hair feeling up to 10 times smoother*. Use this mask as part of the complete Keratin Sleek System. After cleansing with the Shampoo, apply this mask 1-2 times a week in place of the Conditioner for a deep treatment that leaves hair intensely smooth and shiny, before finishing with the Diamond Sleek Shine-Coat Smoothing Spray for a long-lasting sleek look with diamond-like shine. Vegan Formula**. Approved by Cruelty-Free International.
*Instrumental test after application of standard shampoo + mask
**No animal-derived ingredients or by-products
*** Instrumental test after use of shampoo + conditioner + mask as a leave on
Consumer benefits:
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Up to 10x Smoother Hair: This intensive hair mask treatment will leave your hair feeling incredibly soft, manageable, and up to 10 times smoother* to the touch
Frizz-Free Hair: The rich formula intensely smooths the hair fibre from root to tips, providing frizz control and boosting shine
Up to 3 Days of Sleek & Shine: When used as part of the Keratin Sleek system, this mask helps to deliver a super sleek and shiny hair look that lasts for up to three days***
Keratin & Argan Oil: Powered by a 13% Keratin Smoothing Complex and Argan Oil, this hair mask actively smooths the hair fibre for sleek and shiny locks
Vegan Formula: A vegan formula**, approved by Cruelty Free International
Instructions
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After shampooing with Keratin Sleek Shampoo, apply the hair mask generously to wet hair, focusing on lengths and ends. Leave on for 3-5 minutes, then rinse thoroughly. Use 1-2 times a week. For best results, follow with Diamond Sleek Shine-Coat Smoothing Spray.
*Please be aware that ingredient lists for products in our brand are updated regularly. Please refer to the ingredient list on the product package for the most up-to-date list of ingredients to ensure it is suitable for your personal use.
131 out of 136 (96%) reviewers recommend this product
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layla
Review1
Votes0
1 out of 5 stars.
terrible, burns skin
16 days ago
gave me burns/reactions on my face that itch and sting. didn’t really do anything for my hair but soften it a bit
No, I do not recommend this product.
Originally posted on boots.com
MaryA29
Top 500 Contributor
Received Free Product
Northamptonshire
Reviews41
Votes0
5 out of 5 stars.
Love the mask
Top 500 Contributor
Received Free Product
a month ago
I love using keratin sleek mask after I used the shampoo and conditioner from the same range because my hair shines and is sleek for longer time. It does hydrate the hair and make it look healthier than before
Yes, I recommend this product.
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Tezz
Received Free Product
Reviews15
Votes0
3 out of 5 stars.
Little bit hwavy for fine hair
Received Free Product
2 months ago
Ok so I'm very skeptical about putting masks on my hair as its so fine. But this wasn't bad! The smell is amazing but it is a little too heavy for my hair. I will use again but only once a month, maybe.
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fairy19
Top 1000 Contributor
Received Free Product
Reviews31
Votes0
3 out of 5 stars.
Smells lovely
Top 1000 Contributor
Received Free Product
2 months ago
I’ve been using this range for the past few weeks and it’s okay. It smells lovely and is great at detangling. However, i haven’t noticed any difference with the smoothness of my hair, it is hydrating though. I will continue to use the product but i am unsure if i would repurchase, if i did it would be for the detangling side of things rather than smoothing.
Yes, I recommend this product.
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Rachel
Top 1000 Contributor
Received Free Product
South Yorkshire
Reviews28
Votes0
5 out of 5 stars.
Works well
Top 1000 Contributor
Received Free Product
2 months ago
This mask is great. I use it alongside the matching shampoo in the Keratin Sleek hair range. I have tick, wavy-curly hair, and this mask leaves my hair feeling soft, silky and manageable. I will leave it on for around 5-10 minutes for it to get to work and then rinse off. I really like the ingredients of keratin and argan oil, as they really moisturise the hair. In my opinion, this is worth checking out if you have a frizzy or unmanageable hair type.
Yes, I recommend this product.
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Becka343
Top 1000 Contributor
Received Free Product
Burton, West Midlands
Reviews20
Votes0
4 out of 5 stars.
Keratin sleek mask
Top 1000 Contributor
Received Free Product
2 months ago
I used the mask once every two washes with the keratin sleek shampoo and spray. It smells lovely with a fresh, fruity fragrance and is a nice thick consistency. The ends of my hair still felt a little dry so I may need to leave the mask on for longer, but my hair still looked good after styling.
Yes, I recommend this product.
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Carz1985
Top 1000 Contributor
Received Free Product
Northwich/Cheshire
Reviews27
Votes0
5 out of 5 stars.
Amazing hair mask
Top 1000 Contributor
Received Free Product
2 months ago
I'm loving this range and this mask is amazing. I can't believe how smooth and frizz free my hair is after using this along with the shampoo and conditioner. It's so quick and easy to use and smells lovely. Will definitely recommend this.
Yes, I recommend this product.
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eosborne782
Top 100 Contributor
Received Free Product
Norfolk
Reviews54
Votes12
4 out of 5 stars.
Lovely moisture
Top 100 Contributor
Received Free Product
2 months ago
Great hair mask. Easy to open lid, even with wet hands. I applied the product on the mid and ends of hair and left on for 5-10minuites and used once a week as a mask treatment. The product left my hair soft and shiny, without being greasy. Only thing that can be improved is the fragrence. It doesnt smell of anything.