Each day, nails are stripped of natural oils lipids) supplied by the cuticles. Lipids move through the porous structure of nails to provide flexibility which helps reduce breakage. Water, soap, detergents, nail polish removers, and shampoo, dramatically diminish lipids. At night, while the body is at rest, is the perfect time to restore these lipids. Barielle's Intensive Nail Renewal Oil replicates the body's natural lipids and miraculously penetrates nail polish, to restore nail's flexibility, without damaging manicures. Flexible nails resist breaking, resulting in the long and strong nails desired. Size: .50 fl. oz / 14.8 ml Use: Apply liberally to your nails and cuticles nightly or as necessary. Key Ingredients: Sesame Oil, Safflower Oil, Coconut Oil, Keratin, Vitamin E, Calcium.