Bounce Curl Thermal Guard Weightless Leave-In

Protect your curls without weighing them down with Bounce Curl Thermal Guard Weightless Leave-In, a 6-in-1 leave-in conditioner and heat-protecting primer designed to hydrate, detangle, smooth, reduce breakage, and prepare textured hair for styling. Powered by PGenics™ Hydra, Bounce Curl's patented peptide technology, the formula uses water-loving amino acids to support moisture retention and smoother-feeling hair while maintaining a featherlight finish. Sodium hyaluronate, a form of hyaluronic acid, works alongside glycerin, sorbitol, trehalose, and organic aloe vera to support hydration without relying on heavy oils or butters. Baobab seed oil provides lightweight lipid-based conditioning to soften and smooth the hair, while Polyporus Umbellatus mushroom extract provides antioxidant support and contributes to the formula's heat-protective performance. Chia seed and amaranth extracts provide additional conditioning support, while Cetrimonium Chloride adds slip to make detangling easier and reduce friction. Most importantly, Thermal Guard is instrumentally tested to protect hair from heat damage up to 450°F / 232°C when using a flat iron and has also been shown to reduce hair breakage. The result is hydrated, smooth, protected hair that's ready for blow-drying, diffusing, or thermal styling—without a heavy or greasy finish.

How to Use + Best For

After washing and conditioning, section wet hair and mist Bounce Curl Thermal Guard Weightless Leave-In evenly from roots to ends, then brush or comb through to ensure complete and even coverage. Follow with your preferred Bounce Curl stylers and air-dry, diffuse, or blow-dry; when using it specifically for heat protection before a flat iron, Bounce Curl instructs you to apply to wet hair and blow-dry first before using the hot tool. Thermal Guard is designed for fine, medium, and coarse strands across wavy, curly, and coily textures, particularly hair dealing with dryness, tangles, damage, or regular heat exposure. Because Bounce Curl does not assign it an official porosity level, it can work across low, medium, and high porosity hair, although its weightless hydration makes it especially appealing for low-to-medium porosity or fine hair that becomes easily weighed down by richer leave-ins. Drier, higher-porosity curls can also use it as their heat-protection step and layer additional moisture or styling products over it as needed.

Take Khair Tip: Heat protection depends on even coverage—mist section by section and distribute thoroughly before blow-drying rather than applying a few sprays only to the surface of your hair.

Key Benefits: Heat protection up to 450°F / 232°C • 6-in-1 multitasking formula • Hydrates without heaviness • Detangles & smooths • Helps reduce breakage • Primes hair for styling • Lightweight conditioning • Suitable for heat styling

Best For: Wavy, curly & coily hair • Fine, medium & coarse strands • All porosity levels* • Low-to-medium porosity & easily weighed-down hair • Heat-styled hair • Dryness & tangles • Hair needing lightweight hydration + thermal protection

Key Ingredients: PGenics™ Hydra • Sodium Hyaluronate • Organic Aloe Vera • Baobab Seed Oil • Polyporus Umbellatus Mushroom Extract • Glycerin • Chia Seed Extract • Amaranth Seed Extract

Ingredients: Organic Aloe Barbadensis Leaf Juice, Propanediol, Cetearyl Alcohol, Adansonia Digitata (Baobab) Seed Oil, Water, Sodium Hyaluronate, Glycerin, Sorbitol, Trehalose, Galactoarabinan, Xylitol, Tilia Tomentosa Bud Extract, Palmitoyl Tetrapeptide-8 Amide, Polyporus Umbellatus (Mushroom) Extract, Salvia Hispanica Seed Extract, Amaranthus Caudatus Seed Extract, Sodium Citrate, Sodium Phosphate, Dicaprylyl Carbonate, Fructose, Pentylene Glycol, 1,2-Hexanediol, Caprylyl Glycol, Malachite Extract, Cetrimonium Chloride, Sodium Benzoate, Gluconolactone, Fragrance, Benzyl Salicylate, Limonene, Linalool, Linalyl Acetate, Terpineol, Tetramethyl Acetyloctahydronaphthalenes, Vanillin.

*Bounce Curl does not assign Thermal Guard an official porosity classification; porosity guidance is based on its weightless formulation and Bounce Curl's Weightless Collection guidance.

• Shipping Area: We currently ship within Canada.
• Free standard shipping on orders over $70.
• $9.99 standard shipping for orders under $70 in Ontario.
• $14.99 standard shipping for orders under $70 for the rest of Canada.
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• Order Processing Time: Please allow 1-3 business days for order processing, excluding weekends and holidays.
• Shipping Time: Delivery within 3-5 business days from the shipment date.