Tartaric acid: This naturally-occurring alpha hydroxy acid is found in foods like fermented grapes and apricots. It helps stabilize a product’s pH level and it also boosts the sloughing effects of glycolic and lactic acid. Tartaric acid: This naturally-occurring alpha hydroxy acid is found in foods like fermented grapes and apricots. It helps stabilize a product’s pH level and it also boosts the sloughing effects of glycolic and lactic acid. Radish root ferment filtrate: Also known as leuconostoc, this natural preservative is used as an alternative to more harmful preservatives in skin care. It moisturizes and conditions skin and is antifungal, antimicrobial, and water-soluble. Buddleja davidii (butterfly bush): Long been used in Chinese medicine to treat the skin, it is known for its soothing and antioxidant-boosting properties, as well as its ability to bolster collagen.