What it is: A highly potent treatment that promotes strength and elasticity when used as part of the Full Potential regimen. Who it's for: Ideal for those with fine-to-thick hair, straight-to-curly, breakage-prone or thinning hair. What it does: Infused with the brand's Hair Preserve Blend™, this restorative spray acts like a liquid bandaged when used as part of the Full Potential regimen. Energizing creatine helps hair looking healthy, and invigorating menthol offers a cool, tingling sensation. UV absorbers help protect hair against UV damage. How to use: Twice a day, spray onto damp or dry hair from roots to ends and comb through. For best results, begin with your shampoo and conditioner. Note that the Booster Spray's directional spray pattern allows for optimal application to the scalp. For alternative usage, spray directly into your hands and work through. 4.2 oz. Paraben-free; phthalate-free; mineral oil-free; formaldehyde-free Cruelty-free Made in the USA