Gioil Shampoo Description Thanks to its formula of plant oils combined with non-aggressive surfactants, it is particularly suitable for frequent washing, even daily. It is also recommended for those with damaged or fragile hair who require a particularly gentle shampoo that does not alter its physiological balance. How to use Apply Gioil Shampoo to wet hair, massage, and rinse. Repeat, rinse thoroughly. Then dry. Format 200 ml