6 BEST SHAMPOO AND CONDITIONER 6 BEST SHAMPOO AND CONDITIONER! The Institute Beauty Lab scientists test hundreds of hair products every year, from shampoos and conditioners to hair masks, leave-in conditioners and every hair styling product on the market, including hair serums, hair gel, hairsprays, dry shampoos and more. To find the best, each product undertake a ultra-careful testing process to determine which hair care and design products really […]