Cosmedix Pure C - Vitamin C Mixing Crystals - 6 GmPure C is a unique, age defying mixing powder and skincare booster that helps brighten and improve skin texture and tone. BENEFITS: Brightens skin and helps even out skin tone Helps reduce the appearance of fine lines and wrinkles Boosts the results of moisturizers and serums HOW TO USE: We do not recommend applying this product during prolonged sun exposure, as it may make skin more sensitive to the sun.