Visible results in 1 week! (Based on consumer perception test of 103 participants). Powerful protection for short nails. Salon tested. No DBP toluene formaldehyde. America's No. 1 nail brand. What It Is: A growth treatment that fortifies and protects nails so they can grow. How It Works: Triple-protein and silk formula instantly reinforces soft, bitten and weak nails. Protects nails from breaking and splitting. The Results: Visibly longer nails in just 1 week! (Based on consumer perception test of 103 participants). Triple-protein and silk formula helps fortify nails and improve nail condition. 1-800-953-5080 (USA/Canada only). sallyhansen.com. Made in USA.