Goldwell dualsenses curly twist intensive hydrating serum is a deep hydrating treatment for curly and wavy hair, effective in seconds.ideal after a perm service. enriched with microprotec complex, it immediately acts inside the hair strengthening the structure. highly conditioning milk proteins fight frizz and give back the natural elasticity to curls. the hair is softer and brighter, the natural beauty is intensified. safe formula on coloured hair.