OPI Infinite Shine Strengthening Primer Nail strengthening treatment that works like a base coat, helping to make nails feel stronger and protect nails against breaking. Need a little boost? Strengthening Treatment Primer contains lotus flower extract, bamboo extract, and hydrolyzed keratin to help nails feel stronger and protect against breakage. Hydrolyzed keratin derives from keratin, a natural component of nails. Keratin is known to help prevent nails from peeling and tearing and helps protect nails, allows for nail growth. All-in-one Infinite Shine treatment and primer base coat designed to treat nails while providing up to 11 days of gel-like wear and shine. Infinite Shine Treatment Primer Base Coats feature nutrient-enriched formulas designed to address the most common nail concerns. Nail ridge filler infused with antioxidant-rich lotus flower oil and bamboo extract. Conditions, hydrates, and moisturizes nails. Made in the USA. How To Step 1. Apply one coat of the Treatment Primer Base to prepared nails. Step 2. Apply two coats of Infinite Shine color. Wait two minutes after second coat before applying Infinite Shine Gloss Top Coat. Step 3. Finish with one coat of Gloss Top Coat for a durable finish that cures to a mirror shine in natural light.