Strength treatment. 1. Base coat. 2. Strengthener. 3. Growth treatment. 4. Top coat. For dry, brittle nails. Salon tested. Results guaranteed (USA/Canada only). No DBP toluene formaldehyde. America's No. nail brand. What it is: All you need for beautiful nails plus extra moisturizing for dry brittle nails. How it Works: Okoume Extract, Sea Minerals, Triple Protein Complex, Avocado Oil combine in our 4-in-1 patented formula to create a durable shield that helps restore strength, flexibility & moisture to dry, brittle nails. The Results: Stronger, healthy-looking nails in 3 days. Up to 30% longer nails in 5 days (Nail tip measurement). Pure shine up to 10 days! Exclusive patented formula with: avocado oil, okoume extract, soy & silk protein, minerals, wheat & micro-technology. sallyhansen.com. Made in USA.