What it is: A leave-in thickening and volumizing hair treatment for fine, thin hair that leaves hair looking bigger and fuller.Hair Type: Fine, Medium, and ThickHair Texture: Straight and WavyHair Concerns:- Volumizing - Hold & Style Extending - Color SafeKey Benefits: - Instantly thickens for fuller-looking hair- Heat-activated thickening treatment- With three types of heat protectantHighlighted Ingredients:- Corn Starch Modified: Thickens and enhances the look of hair strands.- Hydrolyzed Quinoa Protein: Visibly adds mass and thickness.- Oat Beta Glucan: Improves hair strength, comb-ability, and glossiness.Ingredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also vegan, gluten-free, cruelty-free, and comes in recyclable packaging.What Else You Need to Know: This leave-in treatment with heat protection is activated when you blow-dry. It features a carb-based complex (cellulose, starch, oat bran) that bonds to hair strands with heat, adding weightless mass to every hair so even fine, thin hair looks fuller and denser.