Nail Hardener Treatment Base Coat. Features: Strengthening base coat nail polish for weak and brittle nails. Acts as a targeted nail strengthener from the first application. Helps improve nail resistance and reduce breakage. Supports healthier-looking nails with ongoing nail care. Deeply hydrates and reinforces the nail surface. Ideal between polish sessions or as a treatment base coat. Visible nail regeneration in 1 week. Vegan. Plant-based formula. Cruelty-free. Made in France. Key Ingredients: AHAs: Promote natural nail regrowth and stimulate cell renewal. PHAs: Help gently strengthen and improve nail texture. Silicon: Hardens and visibly strengthens nails over time. Research Results: Proven results*. 100% observed harder nails. 97% observed healthier nails. 93% noticed improved nail quality. Clinical test conducted on 21 women after 3 weeks of use*.