What it is: A long-wearing nail polish free of the eight most toxic ingredients known to cause health problems. What it does: This responsibly-made nail polish is available in shades carefully curated to complement every skin tone. How to use: Apply on clean, dry nails. For best results, use a base coat prior to polish, then finish with a top coat. Style Name: Base Coat Nail Polish. Style Number: 5673961. Available in stores.