Thicken and plump up your hair with the Zenagen Thickening Hair Serum. This powerful anti-aging hair serum soothes scalp inflammation and targets hair loss at the source to grow thicker, fuller hair. Formulated with 100% adaptipure ingredients and is clinically proven to help stimulate faster and denser hair growth within 3 months. This is a lightweight, residue-free serum with a smooth-watery consistency. When applied, the serum is quick to dry and will absorb into the skin without leaving behind an oily or greasy residue.