Rehab for ravaged nails! ​ Clinically proven to minimize the appearance of ridges after 4 weeks. ​ Sally Hansen Gel Rehab Nail Repair Serum helps with gel nail polish damage repair and breakage protection. Infused with Samphire Extract and Vegan Keratin, this fast-drying formula strengthens nails, shields them from external stressors, and helps create a much smoother, more even surface. After 6 days of use*​ 72% say it provides a smoother, more even nail surface​ 71% say nails feel protected from external stressors​ After 21 days of use*​ 80% agreed nails feel stronger​ 78% agreed nails look healthier​ *Based on a consumer study on 52 subjects