KEYMI skincare products use one of the most expensive and prestigious Périgord Truffle as the vital ingredient. Also known as the black truffle or black diamonds, Périgord Truffle is rich in amino acids, which are known to aid collagen production, giving firmer and smoother skin and diminishing the appearance of fine lines and wrinkles. They are a source of antioxidants, which prevent damage from free radicals, leaving skin looking visibly smoother with a radiant glow.