Keratin Booster. Features: Repairs & nourishes damaged nails. Fast-acting between polish. Ultra-fluid texture. Non-greasy & non-sticky. Vegan. Plant-based. Made in France. Cruelty Free. Key Ingredients: Plant-based Keratin:intensely nourishes fragile nails. AHA & Gluconolactone:gently exfoliate the nail plate. Silicon:helps strengthen the nail. Biotin (Vitamin B8):helps harden and fortify the nail. Vitamin C:protects the nail from external aggressions. Research Results: Proven results. Hydrated nails 85%. Harder nails 85%. Nourished nails 85%. Stronger nails 81%. More beautiful nails 81%. Less split nails 81%. Healthier nails 81%. Regenerated nails 81%. Clinical test conducted on 21 women after 3 weeks of use*.