Tri-Harder Unicorn has been made in collaboration with and swatched by @thenailpolishhound. This is a tri thermal which goes between a cold state of purple, to a medium purple/blue to a warm state of green. Images may vary from device to device. All our polishes are 10-FREE, which means it does not contain the following: DPB, Formaldehyde, Formaldehyde Resin, Toluene, Camphor, Xylene, Ethyl Tosylamide, Triphenyl Phosphate, Parabens, Fragrances, Animal Products. Application: As with any nail polish we would always advise using a base coat to protect nails from any staining that could occur from highly pigmented nail polishes. We also recommend 2 coats minimum (sometimes 3) for our polishes to give you an even coverage. It's always advisable to add a top coat to seal in the polish and help it last longer. Give the bottle a good shake before use.