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Garnier Fructis Sleek & Stay Heat-Activated Serum
Advanced Smoothing Formula. This hair smoothing serum helps tame frizz and boost shine, working as a lightweight leave-in treatment for sleek, polished hair.
Heat-Activated Technology. Designed as a smoothing hair treatment, the formula activates with heat to create a water-resistant shield and making it an effective frizz control hair treatment for all-day smoothness.
Frizz-Free, Sleek Results. Sleek & Stay smoothing serum for frizzy hair helps keep styles smoother and shinier, supporting a long-lasting, frizz-free finish.
$9.99 MSRP
Key Ingredient
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Argan Oil
Used for centuries in skincare and haircare, argan oil is an extremely rich golden liquid with anti-inflammatory and anti-aging effects. Quickly absorbed, this transformative ingredient unleashes nutrients, fatty acids, and vitamin E, soothing and deeply hydrating the skin, and restoring shine to dull hair.
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Product Information
Get smooth, sleek results with Garnier Fructis Sleek and Stay Serum, a heat-activated serum that helps deliver up to 5 washes of frizz control and high shine*. Infused with alpha-silanes, this Fructis Sleek and Stay formula provides heat protection up to 450°F for long-lasting smoothness.
*when used in the shampoo, conditioner, and Sleek & Stay system
• Smoothing Hair Treatment: Lightweight, non-greasy serum tames frizz, boosts shine, and leaves an ultra-glassy finish while forming a humidity- and water-resistant barrier.
• Frizz Control & Heat Protection: Heat-activated formula smooths during blow-drying and flat-ironing for a long-lasting, frizz-resistant, polished look.
• Scent: Crisp apple, sun-ripened strawberry, and juicy melon; a vibrant, fruity scent.
Formulated without parabens, phthalates, or DMDM hydantoin, absorbing quickly with a non-greasy feel to leave hair soft, shiny, and easy to style. 100% recycled plastic bottle excluding cap.
For the best sleek results, use the full Sleek & Shine system of shampoo, conditioner, and anti-frizz serum.
All Garnier products are approved by Cruelty Free International under the Leaping Bunny Program.
Benefits
• Up to 5 washes of frizz control when used with the Sleek & Shine system*.
• Heat protection up to 450°F to defend hair during blow-drying and flat-ironing.
• Heat-activated, water- and humidity-resistant shield for lasting sleekness and shine.
• Lightweight, non-greasy finish that keeps hair looking smooth, polished, and frizz-free.
*when used in the shampoo, conditioner, and Sleek & Stay system
Key Features
• Hair type: Frizzy, wavy, curly, coily; dry or humidity-prone
• Performance: Anti-frizz, ultra shine, humidity resistance, heat protection up to 450°F
• Formulation: Vegan and free of parabens, phthalates, and DMDM hydantoin
• Cruelty free: Approved by Cruelty Free International under the Leaping Bunny Program
• Sustainability: Bottle made from 100 percent recycled plastic (excluding cap)
Packaging Details
This product comes in a bottle with a lotion pump, uncarded without a sleeve.
Product Type: Serum
Size: 1.69 fl oz
Product dimensions: 4.449 x 1.575 x 1.575 inches
Product form: Liquid serum
Instructions of Use
After washing with Sleek & Shine Shampoo and Conditioner, prepare hair for styling with the Garnier Sleek & Stay hair smoothing serum.
Step 1: Shake & Apply
Shake well, then apply the heat-activated serum to damp hair, distributing evenly from mid-lengths to ends. Use 1 pump for fine/short hair, 2 pumps for medium hair, and 3–4 pumps for long or thick hair. Focus on mid-lengths to ends; avoid roots.
Step 2: Leave In
Do not rinse. Allow this Garnier Fructis leave-in treatment to coat strands for smoother, shinier hair.
Step 3: Activate With Heat
Blow-dry until hair is fully dry to activate the smoothing technology, then flat-iron as needed (up to 450°F) to seal in sleekness. Air-drying will not activate the serum.
Comb through with a wide-tooth comb after application to distribute the serum evenly.
Ingredients
ISODODECANE • BIS-(MORPHOLINOMETHYL C1-4 DIALKOXYSILOXY) DIMETHICONE • BIS-CETEARYL AMODIMETHICONE • DIMETHICONOL • PARFUM / FRAGRANCE (F.I.L. T70063160/1).
Learn More About Sleek & Stay
Get Frizz-Free High Shine Up to 5 Washes
Garnier Fructis leave-in treatment helps provide frizz-free, shiny hair from the first use when used as part of the Sleek & Shine system with shampoo and conditioner.
- Heat-activated protective serum.
- Up to 5 washes of anti-frizz power*.
- Heat protection up to 450°F.
- Long-lasting shine and sleekness.
*when used in the shampoo, conditioner, and Sleek & Stay system
Hair Smoothing Serum with Pro Alpha-Silane Shine Effect
Sleek & Stay Serum is infused with alpha-silane for long-lasting sleek and scientifically tested to control frizz with patented water-resistant technology. The heat activated serum’s unique formula also includes argan oil and vegan keratin. Sleek & Stay is designed to deliver smooth, soft hair.
Sleek & Shine Hair Care & Styling Products for Shinier Hair
Check out the rest of the Sleek & Shine hair care and styling collection to complete your regimen.
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How to Use the Complete Sleek & Shine System
Step 1: Cleanse with Sleek & Shine Shampoo
Massage into wet hair and scalp, working into a rich lather from roots to ends. Rinse thoroughly.
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Step 2: Condition with Sleek & Shine Conditioner
Apply evenly through mid-lengths to ends to help soften and detangle. Rinse out completely.
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Step 3: Smooth with Sleek & Stay Serum
On damp hair, apply the Garnier Sleek and Stay hair smoothing serum, shaking before each use. Distribute evenly from mid-lengths to ends. Do not rinse.
Step 4: Activate & Style
Blow-dry thoroughly to activate this frizz free hair treatment, then flat-iron to seal in sleekness and help lock in style for smooth, shiny, frizz-controlled results.
Pro Tips
• Focus conditioner and serum on mid-lengths and ends to avoid weighing hair down at the roots.
• For extra control on very frizzy or textured hair, pair Sleek & Stay with Sleek & Shine Anti-Frizz Serum.
Discover The Fructis Sleek & Shine Collection
Elevate your hair care with the full Sleek & Shine regimen. Powered by argan oil and vegan keratin, each formula targets frizz in its own unique way, whether you’re cleansing, conditioning, smoothing, or finishing your style. Mix, match, and layer products for sleek, hydrated, high-shine hair from root to tip.
Sleek & Shine Smoothing Shampoo
- Made for Frizzy, Dry Hair: Specifically formulated as a shampoo with keratin and argan oil, it tames stubborn frizz while enhancing natural shine and manageability.
- Preps for Sleek Styling: Leaves hair clean, soft, and primed for frizz control when paired with the system.
- Long-Lasting Sleekness: Achieve up to 3 days of smooth results when used with Sleek & Shine system.
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Sleek & Shine Smoothing Conditioner
- Deep Conditioning Formula: Powered by sustainably sourced argan oil and vegan keratin, Sleek & Shine Conditioner smooths each strand while restoring shine and strength.
- Lightweight Smoothing Action: A creamy, argan-oil-rich conditioner that helps detangle, soften, and replenish moisture without weighing hair down.
- Humidity-Resistant Finish: Helps deliver up to 72 hours of smooth, manageable hair, even in 97% humidity when paired with the Sleek & Shine system.
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Sleek & Shine Anti-Frizz Serum
- High-Shine, High-Smooth Serum: Concentrated argan oil and vegan keratin work instantly to smooth frizz and strengthen hair.
- Clinically Proven Frizz Defense: Helps deliver up to 72 hours of sleek, frizz-controlled hair in 97% humidity.
- Protective Humidity Shield: Forms a lightweight barrier that tames flyaways and leaves hair looking polished and refined.
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Sleek & Shine Frizz Tamer
- Instant Flyaway Fix: Perfect for touch-ups, this portable serum smooths baby hairs, edges, and frizz with a transparent, non-sticky finish.
- 12-Hour Soft Shine: Infused with plant keratin and argan oil to hydrate, add shine, and control frizz throughout the day.
- Clean & Cruelty-Free: Enjoy a silicone-free, phthalate-free, and mineral oil-free formula. Officially approved by Cruelty Free International under the Leaping Bunny Program.
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Sleek & Shine 10-in-1 Leave-In Spray
- Multi-Benefit Care: A lightweight spray offering 10 benefits including smoothing, heat protection (up to 450°F), shine enhancement, detangling, and visible damage repair.
- Streamlined Styling: Reduces flyaways and nourishes dry, frizzy hair while keeping strands soft, conditioned, and never greasy.
- Routine Simplifying: Cuts your hair care and styling routine into just one simple step with a clean, cruelty-free formula with no weigh down.
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FEATURED PRODUCTS
FEATURED PRODUCTS
Garnier Fructis
Sleek & Shine Smoothing Conditioner
This rinse-out, sulfate-free anti-frizz conditioner for frizzy, dry hair is infused with argan oil from Morocco and vegan keratin to smooth, hydrate, and add shine. Use with Sleek & Shine Shampoo and Anti-Frizz Serum for up to 3 days of frizz control in 97% humidity.*
Visible Results. When used with Sleek & Shine Shampoo and Leave-In Serum, this hair conditioner for dry hair locks in moisture and provides frizz control that lasts for days.
Argan Oil + Keratin Formula. Powered by sustainably sourced argan oil and vegan keratin, Sleek & Shine Conditioner smooths each strand while restoring shine and strength.
Conditioner for Frizzy, Dry Hair. Specifically designed as a conditioner for frizzy, dry hair, this smoothing conditioner transforms rough, unmanageable strands into soft, sleek hair.
*with use of Sleek & Shine shampoo, conditioner and anti-frizz serum
Garnier Fructis
Diamond Sleek Shine-Coat Smoothing Spray
Frizzy, dull hair? Diamond Sleek gives you up to 100 Hours of Frizz-Free Sleek. Diamond-Like Shine.
Heat Activated. Activate Diamond Sleek formula with a blow dryer, don't worry Diamond Sleek has 450°F heat protection.
Lightweight. A non-greasy & non-sticky formula Infused with up to 8% Vegan Keratin Smoothing Complex and Argan Oil.
Heat Protection. Shields hair against temperatures up to 450°F.
Smoother and Shinier. Gives you up to 3X Smoother hair* and up to +38% light reflection**.
At a Glance
What it is: Heat-activated anti-frizz heat protectant spray
Who it’s for: Frizzy, dry, dull hair; all textures (straight–coily)
What it does: Up to 100 hours frizz control; up to 3X Smoother hair*; up to +38% light reflection**
Heat protection: Shields up to 450°F
Key ingredients: Vegan Keratin Smoothing Complex (hydrolyzed proteins) + Argan Oil
Texture: Lightweight mist; non-greasy, non-sticky
Size: 4.6 fl oz (136 mL)
Ethics: Vegan formula; Cruelty Free; bottle (no cap) 100% recycled plastic
*vs a non-conditioning shampoo
**vs unwashed hair
Who it’s for: Frizzy, dry, dull hair; all textures (straight–coily)
What it does: Up to 100 hours frizz control; up to 3X Smoother hair*; up to +38% light reflection**
Heat protection: Shields up to 450°F
Key ingredients: Vegan Keratin Smoothing Complex (hydrolyzed proteins) + Argan Oil
Texture: Lightweight mist; non-greasy, non-sticky
Size: 4.6 fl oz (136 mL)
Ethics: Vegan formula; Cruelty Free; bottle (no cap) 100% recycled plastic
*vs a non-conditioning shampoo
**vs unwashed hair
Garnier Fructis Sleek & Shine Hairspray Instant barrier against frizz.
Garnier Fructis
Sleek & Shine Intense Smooth Leave-In Conditioner
Fructis Sleek & Shine Leave-In Conditioner delivers up to 3 days of Sleek hair with Fructis Sleek & Shine Shampoo, Conditioner and Leave-In Cream. Smooths hair for visibly sleeker, shinier hair.
Value Size. Now in a Value size with +66% more formula!
Manage Dry Hair. Use this essential argan oil leave-in conditioner to manage dryness.
Control Frizz. Vegan keratin and argan oil smooths and sleeks all types of hair.
Make It Shine. A hair smoothing leave-in conditioner that adds shine for up to 3 days.
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Garnier Commits to Greener Beauty
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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.