Thioctic Acid
Thioctic acid, also known as alpha-lipoic acid (ALA), is a potent antioxidant naturally found in the body. It is unique because it is both water- and fat-soluble, allowing it to work in various parts of the cell. In skincare, it helps to neutralize free radicals, which can contribute to premature skin aging and damage.
AntioxidantVegan
BenefitGood 2.8 / 4
Anti aging i2.5 / 4
Whether it can help visible signs of aging — fine lines, wrinkles, loss of firmness, or photoaging.
Pigmentation i1 / 4
Whether it can help uneven tone, dark spots, melasma-like discoloration, or post-inflammatory hyperpigmentation — including brightening and tyrosinase-inhibiting ingredients.
Texture i1 / 4
Whether it can improve smoothness and surface texture — roughness, flaking, clogged pores, or unevenness. Exfoliating acids, retinoids, and smoothing moisturizers may score here.
RiskModerate 1.5 / 4
Irritation i1.5 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Sensitization i1 / 4
Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.
Rated by SpottyLabs' ingredient methodology, independent of brands.
What it helps with
- potent antioxidant
- reduces oxidative stress
- supports skin health
Things to watch
- can cause irritation, especially at higher concentrations
Pairs well with
- Vitamin C — Thioctic acid can help regenerate other antioxidants like Vitamin C, enhancing their overall effectiveness.
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Frequently asked questions
- What makes thioctic acid a unique antioxidant?
- Thioctic acid is unique because it is both water-soluble and fat-soluble, allowing it to function as an antioxidant in both aqueous and lipid environments within the skin cells.
- Can thioctic acid be used with other active ingredients?
- Yes, thioctic acid can be used with other active ingredients, particularly other antioxidants like Vitamin C, as it can help to regenerate them and boost their efficacy.
