Tetrahexyldecyl Ascorbate (THD Ascorbate) is an oil-soluble, highly stable form of Vitamin C, known for its deep penetration into the skin, powerful antioxidant properties, and ability to boost collagen production. It is widely used in skin-whitening formulations to reduce hyperpigmentation, brighten skin tone, and protect against free radical damage. Unlike traditional ascorbic acid, THD Ascorbate is gentle on the skin and works well in both water-free and oil-based formulations.
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