Hyalogic, Lush Lash and Brow Serum, .17 fl oz (5 ml). With Hyaluronic Acid, Argan Oil and KGF™ Conditions Lashes & Brows. Fragrance Free, Gluten Free, Paraben Free, Dye Free, Cruelty Free. Lush Lash and Brow Serum can help protect and support the beauty of your lashes and brows with a formula of nourishing oils, proteins and vitamins which work to nourish follicles and condition hair. The Hyaluronic Acid in this serum is a vital natural element that locks in moisture. Apply nightly as directed to help protect the natural health and beauty of your lashes and brows. Hyaluronic Acid (HA) is a vital and natural element of healthy, vibrant skin. It is necessary to retain the skin's moisture and help maintain youthful looking skin. Keratinocyte Growth Factor (KGF™) is a special protein which is known to support healthy, vibrant hair follicles.