NAILBUFFS Deep Damage Oil Formula penetrates the structure of your nails (layers and fibers), delivering immediate, dramatic relief to dehydrated, moisture starved nails. Best used overnight, twice monthly, after using our Micro Smoother and then nightly under nail tips. Do not allow oil to touch your nail buffer. Note: Please stop the use of antibacterial soaps containing Triclosan. They are both toxic and dehydrating. Nail polish and so called nail hardeners and nail strengtheners will not strengthen your nails. Our Deep Damage Oil will! No Chemicals. No Preservatives.