Essie's Hard to Resist Advanced Nail Strengthener is a clinically tested treatment designed to fortify weak and damaged nails. Formulated with innovative MSM Technology, this clear-tint polish bonds to the nail surface, providing instant strength and resilience against weakness and dryness. In just three days, nails are visibly healthier and more resistant to breakage. The 8-free, vegan formula is applied directly to bare nails, requiring two coats for optimal effect without the need for a base or top coat. It's the ideal solution for rehabilitating nails between manicures.