Philosophy Turbo Booster C Powder Topical Vitamin C 0.25 OZ New Sealed. Brand new product with convertible vitamin C that can be mixed fresh daily in the palm of your hand with your favorite moisturizer or serum. It is a powerful topical antioxidant to help against free radicals and rejuvenate your skin for a healthy radiant glow. Low PH High potency and stable formation. Multi-unit purchase discounts are available. I ship very fast generally on the day of purchase.