The Brow Serum is packed with scientifically proven ingredients to nourish hair follicles and promote healthier stronger hair growth. (See details tab below) This serum will enhance the thickness of the brow hair and help stimulate growth in areas that are sparse. The serum comes in a 5ml hygienic dropper bottle with an applicator brush and is suitable to use on both brows and lashes. Perfect for conditioning hairs after chemical treatments such as brow lamination and lash lifting and also to strengthen lashes weakened by extensions.