Ultra Strong Nail Hardener. Essence.
Super resistance. The ultra strong nail hardener strengthens and hardens brittle nails. The fast-drying nail polish is so full of power that there are a few things to take note of: it contains formaldehyde, so it's important to massage some oil or fat into your cuticles. Use for a maximum of three weeks. Always apply for two days and then take a break for one day.