💅 Nail your strength game with Nail-Aid! Perfect as a base or top coat for any nail color. Harness the power of biotin for resilient nails. Quick-drying formula for a flawless finish. See visible results in just 3 days! Reapply every 3 days for ultimate durability. Quick Dry Finish Biotin Boost 3-Day Results Nail-Aid Biotin Ultimate Strength is a powerful nail treatment designed to fortify soft, torn nails with biotin (vitamin B7). Experience visible improvements in nail strength and appearance in just 3 days, with a quick-drying formula that ensures a long-lasting, chip-resistant finish. Use it alone or as a base and top coat for your favorite nail colors.