Alpha Lipoic Acid
INCI: thioctic acid
Also known as: thioctic acid
AKA thioctic acid Both water and oil soluble
Best For Skin Types
All skin types
Usage Frequency
As directed on product packaging
EWG Safety Score
What Is Alpha Lipoic Acid?
Alpha lipoic acid, also known as thioctic acid, is a caprylic acid-derived antioxidant. Alpha lipoic acid is unique among antioxidants, because due to its structure it is both water and oil soluble.
When applied topically on skin, it appears to be a very good antioxidant. Taken internally, alpha lipoic acid is a water- and fat-soluble antioxidant capable of regenerating other antioxidants, such as vitamins C and E. It is also believed to exert numerous soothing effects.
It’s clear from the research that alpha lipoic acid is a potent antioxidant, but it isn’t the only one; there are lots of great antioxidants for skin. In fact, there isn’t a lot of research on topical application of alpha lipoic acid.
This ingredient’s extremely vulnerable to degradation by sunlight. Higher concentrations (5% or greater) are capable of causing a burning or stinging sensation on skin.
Benefits for Your Skin
How It Works
Clinical Evidence & References
Published Research
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Alpha-lipoic acid as a biological antioxidant Free Radic Biol Med, 1995
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Topical alpha lipoic acid improves skin aging J Am Acad Dermatol, 2002
Related Ingredients
3-O Ethyl Ascorbic Acid
A more stable derivative of pure vitamin C Capable of helping fade dark spots
Acacia Seyal Gum Extract
Type of polysaccharide
Acai
Potent source of skin-beneficial antioxidants Contains ferulic acid and epicatechin
Acer Saccharum Extract
Plant extract noted in research for its antioxidant compounds
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