Butylated Hydroxytoluene
Butylated Hydroxytoluene (BHT) is a synthetic antioxidant commonly used in cosmetics and food products. Its primary role is to prevent oxidation, which can cause products to degrade, change color, or develop off-odors. By protecting ingredients from reacting with oxygen, BHT helps maintain product freshness and extend shelf life.
NoneAntioxidantVeganEvidence: Medium
RiskModerate 1.5 / 4
Systemic exposure i1 / 4
Whether it has meaningful potential to be absorbed into the body at levels that may matter biologically. Most cosmetic ingredients score low unless there is known concern or high exposure.
Sensitization i0.5 / 4
Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.
Irritation i0.5 / 4
Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.
Rated by SpottyLabs' ingredient methodology, independent of brands.
Things to watch
- Potential for skin irritation in sensitive individuals
- Possible endocrine disruption concerns at high systemic exposure
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Frequently asked questions
- What is BHT used for in cosmetics?
- BHT is used as an antioxidant in cosmetics to prevent ingredients from oxidizing, which helps to maintain the product's stability, color, and fragrance over time.
- Is BHT safe for use on skin?
- BHT is generally considered safe for cosmetic use at low concentrations. Some individuals with sensitive skin may experience irritation, and there are ongoing discussions regarding potential systemic effects, though current regulatory bodies deem it safe under typical use conditions.
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