Tetrahexyldecyl Ascorbate
Reviewed by Kate · Last updated 14 Aug 2026
Also known as: Magnesium Ascorbyl Phosphate, Ascorbyl Palmitate, Vitamin C
Oil-soluble, more stable form of vitamin C
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What Is Tetrahexyldecyl Ascorbate?
Tetrahexyldecyl ascorbate (THD or THD ascorbate) is a highly stable form of vitamin C that is considered an analogue of L-ascorbic acid. Enzymes within skin convert this form of vitamin C to pure vitamin C, ascorbic acid.
Benefits for Your Skin
Clinical Evidence & References
References:
- Cosmeceuticals Aesthetic Dermatology, Volume 5, 2021, pages 38-46 [URL not found]
- Journal of Cosmetic Dermatology, December 2020, pages 3,251-3,257 View Study
- The Journal of Clinical and Aesthetic Dermatology, April 2019, pages 46-53 [URL not found]
- Skin Therapy Letter, Volume 21, Number 1, July 2016, ePublication [URL not found]
- Journal of Drugs in Dermatology, March 2013, pages 16-20 [URL not found]
- Clinics in Dermatology, July-August 2008, pages 367-374 [URL not found]
- Dermatologic Surgery, March 2002, pages 231-236 [URL not found]
- https://www.cir-safety.org/sites/default/files/ethasb062017rep.pdf View Study
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