The fibers in Toppik are charged with static electricity so they intertwine with your own hair and bond securely. Just shake on the Toppik fibers. They stay in place all day, all night. It's a secret weapon used by millions of men and women around the world. Make your dark brown hair look fuller, more luxurious and sexier with this hairstyling product. Rather than choose expensive, painful extensions that can look fake, make your own hair thicker and more voluminous. Perfectly matched for darker hair colors, this product brings both men and women closer to what they want: a full head of hair. Size: 1.94 ounces Quantity: One (1) Targeted area: Hair Skin/hair type: Dark brown hair Active ingredients: Keratin, ammonium chloride, silica Other ingredients: DMDM hydantoin. May contain: FD & C yellow No. 6, FD & C yellow No. 5, D & C red No. 22, D & C red No. 33, FD & C blue No. 1, D & C green No. 5, FD & C green No. 3, D & C green No. 6, D & C orange No. 4.