Thicken It is an all natural product for fine or thinning hair that helps cover the scalp. It is a cotton fiber that is infused with color (pigment) that does not come out of the hair until you shampoo. Thicken It is talc free and gives 100% gray coverage. It is great for filling in calics, touching up grey mustaches, darkening or creating fuller eyebrows or perfect for those in between color times. Covers Gray Hair, WILL NOT RUN on clothes!