Diamond Sleek Shine Coat Smoothing Spray
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FRUCTIS Diamond Sleek Shine-Coat Smoothing Spray

Frizzy, dull hair? Diamond Sleek gives you up to 100 Hours of Diamond-Like Shine. Frizz-Free Sleek.

Frizzy, dull hair? Diamond Sleek gives you up to 100 hours of frizz-free sleek and diamond-like shine. This heat-activated formula shields up to 230°C and leaves hair up to 3X Smoother* and with up to +38% light reflection**, non-greasy mist infused with up to 8% Vegan Keratin Smoothing Complex and Argan Oil. Learn more on this page for Garnier Fructis Diamond Sleek Shine Spray.

• Up to 100H Diamond-Like Shine: Coats the hair fiber to boost light reflection from all angles, providing your hair with a spectacular, polished shine that lasts for up to 100 hours*.

• Up to 72H Frizz-Free Sleek: Our formula shields and smooths hair to reduce frizz even in high humidity, delivering a sleek, polished look that lasts for up to 72 hours*.

• Heat Activated Formula: This formula requires blow-dryer heat to activate its smoothing power and provides thermal protection from styling tools up to 230°C*, keeping your hair healthy.

• Keratin & Argan Oil: Powered by an 8% Keratin Smoothing Complex and Argan Oil, this spray actively smooths the hair fiber for a sleek, and shiny result.

• Lightweight & Non-Greasy: Enjoy a super sleek finish without the heavy feel. The texture is lightweight, non-greasy, and non-sticky, ensuring your hair has a natural, bouncy feel.

• Heat-activated frizz control: Up to 100 hours diamond-like shine, 72 hours Frizz-Free Sleek

• Heat protection: Shields hair up to 230°C

• Smoother and shinier: Up to +38% light reflection**

• Lightweight feel: Non-greasy, non-sticky mist

• Key ingredients: Up to 8% Vegan Keratin Smoothing Complex + Argan Oil

• Hair types: For frizzy, dry, dull hair; suitable for all hair textures

• Texture: Fine mist spray

• Size: 136 mL

• Ethics: Approved Cruelty Free; vegan formula; bottle without cap made of 100% recycled plastic


*vs a non-conditioning shampoo
**vs unwashed hair

Key Ingredient

AQUA / WATER / EAU • 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. T70073267/1).

1. Wash and hydrate hair with Keratin Sleek Shampoo and conditioner.

2. Towel-dry until hair is damp.

3. Spray Diamond Sleek Anti-Frizz Heat Protectant evenly throughout damp hair.

4. Blow-dry in sections using a brush to create tension; heat activates the formula. For hair straightener, ensure hair is fully dry before using hot tools (max 230°C).

Is Diamond Sleek right for my hair type and routine?

• Best for: Frizzy, dry, dull hair; fights humidity

• Hair textures: Works on straight, wavy, curly, and coily hair

• Styling routines: Ideal before blow‑drying and hot tools up to 230°C

• Feel: Lightweight, non‑greasy, non‑sticky with a fine mist

Up to 100 Hours of Diamond Like Shine. 72 Hours Frizz-Free Sleek.

  • Shields hair against temperatures up to 230°C.
  • Shield and smooth hair to reduce frizz even in high humidity.
  • Lightweight texture, non-greasy, non-sticky.
  • Infused with up to 8% Vegan Keratin Smoothing Complex and Argan Oil.

Heat Activated Formula

Activate Diamond Sleek formula with a blow dryer, don't worry Diamond Sleek has up to 230°C heat protection.

Diamond Sleek Shine-Coat Smoothing Spray

  • Up to 100 hours of polished shine
  • Up to 72 hours of sleek frizz control
  • Up to +38% light reflection*
  • Up to 230°C heat protection

*instrumental test

Discover the Fructis Keratin Sleek Collection

Maximise frizz control with the Fructis Keratin Sleek system of hair care products for long-lasting sleek hair. From daily shampoo and conditioners and smoothing hair treatments, layer and combine Sleek products at all steps of your routine to experience sleek & smooth hair.

Garnier Sleek & Shine Styling: Find Your Perfect Match

Benefit
Up to 3 days sleek hair
HAIR TYPE
Frizzy, dry hair
Format
200ml
Ingredients
Vegan Keratin + Argan Oil
Application
Rinse-off
Up to 3 days sleek hair
Frizzy, dry hair
200ml
Vegan Keratin + Argan Oil
Rinse-off
Keratin Sleek mask
Up to 3 days sleek hair
Frizzy, dry hair
370ml
Vegan Keratin + Argan Oil
Leave-in
Anti-Frizz, High Shine up to 5 washes. Heat-protection up to 230°C
Frizzy, dry hair
50ml
Alpha-silane
Apply on damp hair. Blow dry. Use flat-iron to lock long-lasting sleek, up to 5 washes
Diamond Sleek Shine Coat Smoothing Spray
Up to 100H polished shine, frizz-free sleek. Heat-protection up to 230°C
Frizzy, dry hair
137ml
8% [Vegan Keratin Smoothing Complex + Argan Oil]
Apply on damp hair. Blow dry hair by sections applying tension. Finish with flat-iron for optimal shiny sleek results.
Up to 3 days frizz control, protection in 97% humidity
Frizzy, dry hair
150ml
Vegan Kera-system + Argan Oil
Leave-in

Garnier Commits to Greener Beauty

  • Cruelty Free Products

    All Garnier products are approved by Cruelty Free International under the Leaping Bunny Program.

  • 99% Vegan Products

    99% of ingredients in Garnier's products are vegan and not derived from animals.

  • Renewable Energy Goal

    By 2025, all electricity & gas usage in our plants and distribution centers will be carbon neutral.

LEARN MORE

Fructis Diamond Sleek Anti-Frizz Heat Protectant FAQs

Does this product protect from heat?
Yes! Garnier Fructis Diamond Sleek protects from heat, up to 230°C

Can I apply Garnier Fructis Diamond Sleek without using blow-dryer?
Garnier Fructis Diamond Sleek needs blow-dryer heat to activate the advanced humidity-blocking technology.

What is the difference between Sleek & Stay and Diamond Sleek?
Sleek & Stay is a heat-activated serum especially formulated to get long-lasting sleek and high shine that lasts up to 5 washes; flat-iron heat is required to activate formula. Diamond Sleek is a shine-coat smoothing spray especially designed to unlock expensive-looking sleek at home, delivering up to 100H polished shine and frizz-free sleek; blow-dryer heat is required to activate formula, flat-iron is optional but recommended to achieve optimal sleek results.

Is this product Cruelty Free?
All Garnier formulas have been approved by Cruelty Free International under the Leaping Bunny Programme.

Is this product Vegan?
Yes, this product has a vegan formula so contains no animal-derived ingredients.

Reviews

Rating Snapshot

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129 reviews with 5 stars.
22 reviews with 4 stars.
6 reviews with 3 stars.
0 reviews with 2 stars.
0 reviews with 1 star.

Overall Rating

4.8
140 out of 142 (99%) reviewers recommend this product

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    Filter Reviews

    1 to 8 of 157 Reviews .
    1 – 8 of 157 Reviews
    London
    Review 1
    Votes 0
    Age35 to 44
    GenderFemale

    Perfect

    5 months ago
    [This review was collected as part of a promotion.] The perfect finish to any haircare routine. This leaves a glossy shine to my hair. My hair has never felt and looked so soft. It is very nourishing and revives any dull and dry hair instantly. I used this with the hair mask, shampoo and conditioner in this range and it worked like a charm. It is easy to apply too as it is a spray that disperses an even, fine mist on the desired area. It makes my hair feel really soft. It is not at all sticky either which is great as it means less need to wash my hair. I highly recommend this with the other products in this range as it really completes the perfect salon finish look without having to break the bank!

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    London
    Review 1
    Votes 0
    Age35 to 44
    GenderFemale

    Diamond Sleek Smoothing Spray

    6 months ago
    [This review was collected as part of a promotion.] I’ve been using the Diamond Sleek Smoothing Spray and I really like it. It’s very lightweight and doesn’t make my hair greasy or heavy. I spray it on damp hair before blow-drying, and it helps keep my hair smooth, shiny, and frizz-free. My hair looks more polished and feels softer, especially after styling. I also like that it gives heat protection, so I feel more comfortable using a dryer or straightener. The smell is nice and not too strong. Overall, it’s a good product for everyday use if you want sleek hair with extra shine. I would definitely use it again and recommend it.

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    Dorchester, Dorset
    Review 1
    Votes 0
    Age45 to 54
    GenderFemale

    Smoothing and reduced drying time!

    5 months ago
    [This review was collected as part of a promotion.] Having fine hair with a natural wave/slight curve that I wash dry & straighten daily, I was excited to try the set of Keratin products. They all work very well together & do what they say! This spray is great and works well even when not used with the other Keratin smooth products. I also found that using this spray reduced the time it took to dry my hair which is both an added bonus as wash it daily and a reduced drying time, better for my hair. Would recommend this spray in conjunction with the shampoo, conditioner and mask as suggested and by itself for shiny & sleek hair.

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    Lancashire
    Review 1
    Votes 0
    Age35 to 44
    GenderFemale

    Incredible shine!

    5 months ago
    [This review was collected as part of a promotion.] This 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. It is lightweight, non-greasy, and non-sticky which gives a natural feel without any weigh-down. It is heat-activated and provides essential protection from heat styling tools, including from blow drying and straightening. It leaves my hair super shiny.

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    Leyland
    Review 1
    Votes 0
    Age35 to 44
    GenderMale

    Wonderful, shiny hair

    6 months ago
    [This review was collected as part of a promotion.] I tried the Diamond Sleek smoothing spray and I'm very satisfied with it. I use it after washing my towel-dried hair, it makes my hair noticeably smoother and easier to comb, and frizzy hair is visibly reduced. The shine is beautiful, but without making my hair look greasy, which is especially important to me. The scent is very pleasant. My hair feels soft after spraying, isn't sticky, and looks healthy. Of course, it doesn't replace professional straightening, but it's a really good option for daily care and neat styling.

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    Keighley west yorkshire
    Review 1
    Votes 0
    Age45 to 54
    GenderMale

    The perfect Shine !

    6 months ago
    [This review was collected as part of a promotion.] Really enjoyed trying out this Garnier DIAMOND SLEEK (Shine Coat Smoothing Spray ) up To 100 H Polished Shine Frizz - Free Sleek . This is for Frizzy . Dull Hair this is a 150 ml spray bottle up to + 38 %Light Reflection i used this on my hair as a last step after using the shampoo. Conditioner & mask of this SLEEK routine l i use by applying to my dried hair i spray the product on my hair & divide hair into sections then used my hair dryer & use a round brush to create tension & to activate the formula then once dried i straightened my hair for the sleek look & Soft smoother & silkier hair with no frizz! This lasted up to the 72 hours sleek look great heat protector also ! for use with tour heat styling tools for up to 230 c Cruelty Free & Vegan Formula wonderful product !

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    East midlands
    Review 1
    Votes 0
    Age25 to 34
    GenderFemale

    Smells lovely, helped define my curls

    5 months ago
    [This review was collected as part of a promotion.] I used this smoothing spray as part of the full keratin sleek routine. I applied it after washing as the instructions say, and it smells so light and pleasent and is really easy to apply. However, my hair is naturally quite curly and is very prone to frizz, so despite following the routine, after drying and straightening, my hair was far from sleek. However, on my next wash, I used the products again, but rather than blowdrying and straightening as advised, I spritzed this spray into my hands and smoothed it over my curls, then let my curls dry naturally, and they had a lovely shine with much less frizz. So if you have curly hair, I'd recommend these, as long as you are planning to embrace your curls, do not expect your curls to miraculously become sleek and straight hair though.

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    gosport
    Review 1
    Votes 0
    Age35 to 44
    GenderMale

    Heat Protection With Shine!

    6 months ago
    [This review was collected as part of a promotion.] Presented in a spray bottle, it delivers the perfect mist when applying all over freshly washed hair. It does state to use tension when blow drying and also sealing in the shine when using a hair straightener. I have used this with just a hairdryer, or a hair iron, anyway you use this it delivers smoothness and shine. I was pleasantly surprised my hair felt hydrated and frizz-free all day, even when it rained! A highly recommended spray for hair that seeks smoothness and shine with added heat protection!

    Yes, I recommend this product.

    Originally posted on garnier.co.uk

    1 – 8 of 157 Reviews
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