Blue Matcha powder produces an incredibly stunning vibrant blue or purple pigment. The natural powder is sensitive to PH changes and will change from blue to a deep, beautiful purple color if combined with a few drops of lemon or lime juice (or anything acidic). Blue Matcha Powder is rich in polyphenols which can help stop the harmful effects of free radicals that damage and degrade the skin, as well as increase collagen and elasticity in skin cells. Details: Blue Matcha Powder 1 oz. 3 year shelf life Store in cool, dark, dry place