The Extreme Nail Hardener can be used as a base coat or as a clear nail polish and has a high-gloss finish. The formula ensures noticeably stronger, harder* nails – the polish can be applied twice a week as a cure for soft fingernails that are prone to chipping.
*In an external study, 90% of testers confirmed that their nails felt harder after two weeks of use. Self-assessment by 50 women/testers.
