Joico Defy Damage Protective Shield is a leave-in heat protectant spray you apply before blow-drying or hot-tool styling, rather than a rinse-out treatment. This is Joico's standard 3.38 oz bottle. The formula centers on arginine, which bonds to the hair's structure to help reinforce strands, along with moringa seed oil for antioxidants and a blend of silicones that smooth the cuticle and help guard against thermal and UV exposure. It's built for people who color-treat or regularly heat-style their hair and want a light layer of protection rather than a heavy cream. Shake the bottle, mist it onto clean, damp hair, comb it through, then dry or style as usual since it isn't washed out. Because it leaves a light silicone finish, it also helps hair glide more easily under a flat iron or curling iron, which cuts down on the dragging that leads to split ends.

Iodopropynyl Butylcarbamate, Alpha-Isomethyl Ionone, Aminomethyl Propanol, Aminopropyl Dimethicone, Aqua (Water), Arginine, Arginine HCl, Avena Sativa (Oat) Peptide, Behentrimonium Chloride, Butyloctanol, C10-40 Isoalkylamidopropylethyldimonium Ethosulfate, C11-15 Pareth-7, C12-15 Alkyl Benzoate, C12-16 Pareth-9, Cetearyl Alcohol, Cinnamidopropyltrimonium Chloride, Citric Acid, Citronellol, Cocos Nucifera (Coconut) Oil, Dimethicone, Dipropylene Glycol, Disodium EDTA, Glycerin, Isopropyl Alcohol, Laurdimonium Hydroxypropyl Hydrolyzed Keratin, Limonene, Moringa Oleifera Seed Oil, Myristyl Alcohol, Parfum (Fragrance), PEG-4 Laurate, PEG-6 Methyl Ether Dimethicone, Phenoxyethanol, Phosphatidylcholine, Rosa Canina Fruit Oil, Silicone Quaternium-16, Steartrimonium Chloride, Tocopherol