Colour Riche Nail: Our nail formula has the purest, richest colorants in order to give you brilliant, vibrant shades from day 1 to day 7. No graying, no fading. Our nail formula has 7 days of hold. Our nail formula also enriches nails, so nails stay strong & healthy coat after coat. Lastly, we’ve included shine agents to our formula that reflect light evenly to give nails a sophisticated & eye catching glow.