IT BOOST Conditioner for Men. This gentle, non-stripping shampoo is scientifically formulated with caffeine (from coffee berries), Asian ginseng, licorice, vanilla bourbon, and biotin to accelerate hair growth, block DHT, stimulate scalp circulation, heal damage, thicken thinning or fine hair, and nourish roots and follicles for naturally stronger, healthier hair. Sulfate and paraben free.