Guhl Shampoo Oily Hair has been reformulated with the extract of Yuzu Citrus fruit (known in Japan as a super-fruit), to remove excess oil from hair while protecting it from dehydration. Yuzu Citrus fruit is rich in Vitamin C that helps strengthen the health of the hair and scalp. This unique formula with Guhl's Hydra-Zink-Komplex removes excess oil from the hair and effectively slows any new build-up of oil without drying hair out. The scalp is moisturized and hair is left with a long-lasting feeling of lightness and freshness. For use on hair types from normal to very oily, this shampoo is concentrated - a little goes a long way!