Spectral.rs is indicated for women and men who prefer a natural formula because it makes hair look thicker and feel stronger without using minoxidil.apply 10 sprays twice per dayshake well before use. apply 10 or more sprays in the thinning area twice per day. rub the liquid evenly over the entire scalp. do not rinse. spectral.rs should be applied on a consistent schedule whether hair has been washed or not. spectral.rs can be used in combination with topical treatments containing minoxidil.