LOreal Professional Densite Thickening Primer Fine Hair is a hair styling product designed to provide a densifying effect for fine and thinning hair. This primer is formulated with ingredients that help to add volume, body, and thickness to the hair. The key ingredients in this product include Intra-Cylane, which is a molecule that helps to strengthen and thicken the hair fiber, and Hydralight, which is a moisturizing ingredient that helps to keep the hair hydrated and soft. The primer also contains ceramides, which help to strengthen and protect the hair from damage. To use this product, you can apply a small amount to towel-dried hair and distribute it evenly through your hair with your fingers or a comb. You can then style your hair as usual. This primer can be used on its own or as a base for other styling products. This is a unisex product. Comes in sprays form. Set of 3, each is .5 oz. Ingredeints include Intra-Cylane, Hydralight, Hydrogenated Castor Oil, Safflower Glucoside, and Alteromonas Ferment Extract.