Sun Bumu0027s blonde formula Hair Lightener creates permanent highlights powered by natural sunlight. This special blend gradually lightens and brightens, creating natural subtle tones and highlights without brassinessTo use: For an all-over lighten and brighten, spray throughout dry or damp hair before sun exposure. For sun-kissed highlights, spray onto select strands. To avoid breakage and over-drying, dont use more than once between hair washes.Sun Bum is Cruelty-Free. This means that their products and raw materials are not tested on animals. Period. They are also certified by PETA and Leaping Bunny, third-party companies that verify product testing practices as well as the processes of their suppliers.