Thioglycerin
Thioglycerin is a chemical compound primarily used in hair care products as a reducing agent. It works by breaking down the disulfide bonds in hair, which is essential for processes like perming or straightening. It is generally not found in skincare products.
NoneReducing agentVeganEvidence: Medium
RiskModerate 2 / 4
Irritation i2 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Sensitization i1.5 / 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
- Facilitates hair perming/straightening
Things to watch
- Can be irritating to skin and scalp
- Potential for sensitization
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Products with Thioglycerin
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Frequently asked questions
- What is thioglycerin used for in cosmetics?
- Thioglycerin is primarily used in hair care products, specifically in permanent waving or straightening solutions. It acts as a reducing agent to alter the hair's structure, allowing it to be reshaped.
- Is thioglycerin safe for sensitive skin?
- Thioglycerin can be irritating and may cause sensitization, especially on sensitive skin or scalp. It is generally not recommended for direct skin contact and should be used with caution in hair treatments.
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