Get soft, glossy hair in seconds with this light, non-greasy serum. It can be used as required to touch up your hair style. A little goes a long way! Our hair serum is ideal for use on just-straightened hair, making it glossy and sleek, while also activating and refining just-curled hair. Extremely economical, you only need a tiny amount to transform and protect your hair. Herstyler's Argan Oil Hair Serum also repels moisture and prevents frizziness in humidity. Argan Oil Hair Serum can be applied to soaking wet hair before styling, or sparingly on newly styled hair as well.