When you thicken your hair, there's also a change inside—the beautiful feeling that comes with thicker, fuller looking hair. Instantly thickens & delivers weightless conditioning to help protect the hair from breakage. Naturally derived amino acids mimic hair’s building blocks to help hair feel stronger from roots to ends. Hair is left looking & feeling thicker with fullness that lasts all day. Organic, Sustainable, Non-Toxic, Paraben Free, No Mineral Oil. Aveda is a PETA certified cruelty-free brand; they do not test any of their products on animals.