Protects and strengthens soft, fragile nails , Hardens nails and smoothes ridges Sally Hansen hard as nails is an extra-strength nail hardening treatment that protects and strengthens soft, fragile nails. Nylon formula fortifies nails and helps prevent chipping, splitting and peeling; retinol and copper peptide formula hydrates parched nails; Omega 3 and soy formula helps diminish the look of ridges. Application tips: Apply 2-3 coats on bare nails, let dry. Available in nude shade. Supplied in 13.3 ml bottle.