Nail strengthener Strengthens the surface of the nail 90% confirm harder nails Clear as well as glossy finish You have brittle and thin nails. With Essences Extreme Nail Hardener, these problems are a thing of the past. The nail hardener can strengthen the nail surface, nourish your nails and provide a transparent and shiny finish. 90 percent confirmed harder nails and that already after 2 weeks. Instructions for use: Nail strengthener. 90% of users confirm harder nails. Self-evaluation of 50 women after 30 days of use. Application 2 times a week. Ingredients: ETHYL ACETATE, NITROCELLULOSE, BUTYL ACETATE, ISOPROPYL ALCOHOL, DIPROPYLENE GLYCOL DIBENZOATE, TRIETHYL CITRATE, ADIPIC ACID/NEOPENTYL GLYCOL/TRIMELLITIC ANHYDRIDE COPOLYMER, ACRYLATES COPOLYMER, APIUM GRAVEOLENS (CELERY) SEED EXTRACT, TOCOPHEROL, CAPRYLIC/CAPRIC TRIGLYCERIDE, MALTOL, PISTACIA LENTISCUS (MASTIC) GUM, CI 15880 (RED 34 LAKE), CI 77510 (FERRIC AMMONIUM FERROCYANIDE). Cautions: danger