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Home/Toxic Ingredients/BHT (Butylated Hydroxytoluene)
Ingredient analysis · Hazard 5/10

BHT (Butylated Hydroxytoluene).

Also known as: butylated hydroxytoluene, E321, 2,6-di-tert-butyl-4-methylphenol

A synthetic antioxidant closely related to BHA, used to prevent oxidation in cosmetics and food. Less studied than BHA but shares some endocrine disruption concerns.

Hormone Disruptor
Hazard score

By the numbers.

1 = low concern, 10 = avoid.

Hazard Score
5
Moderate Concern
Frequency risk

Risk by usage.

How risk shifts depending on how often you use products with BHT (Butylated Hydroxytoluene).

1-2x per week

Generally low risk at cosmetic concentrations.

Daily use

Mild concern; consider alternatives if using multiple BHT-containing products.

2+ times daily

Moderate concern from cumulative exposure across food and cosmetic sources.

Health risks

What the research says.

Possible endocrine disruptor; shown to affect thyroid and reproductive hormones in animal studies.

May promote tumor growth in certain animal models, though evidence is less conclusive than for BHA.

Food and Chemical Toxicology, 2002

Regulations

Global status.

How bht (butylated hydroxytoluene) is regulated in cosmetics around the world.

Restricted in 4Allowed in 6No data for 1

40% of countries with data ban or restrict this ingredient

🇺🇸USA
Allowed
🇪🇺EU
Restricted
Details

Max 0.8% in body products, lower in lip/oral products per Regulation 2022/2195.

🇬🇧UK
Allowed
🇨🇦Canada
Allowed
🇯🇵Japan
Restricted
Details

Permitted with limits under MHLW standards.

🇰🇷S. Korea
Restricted
Details

Permitted with concentration limits.

🇦🇺Australia
Allowed
🇨🇳China
Restricted
Details

Permitted with limits per Safety Technical Standards.

🇧🇷Brazil
Allowed
🇮🇳India
No Data
🌏ASEAN
Allowed
Why it’s used

The reason brands include it.

Prevents oils and fats from going rancid, extending the shelf life of lipsticks, moisturizers, and other oil-based products.

49

products in our database

21

brands use it

3

product categories

Better alternatives exist. Brands choose bht (butylated hydroxytoluene) because it’s cheap and effective, but safer options like tocopherol (vitamin E), rosemary extract, ascorbic acid (vitamin C) deliver similar results without the health concerns.

Categories

BHT (Butylated Hydroxytoluene) in product types.

Click a category to see every product containing bht (butylated hydroxytoluene).

Products Containing BHT (Butylated Hydroxytoluene)

These popular products list bht (butylated hydroxytoluene) in their ingredient labels. Tap any card to see the full breakdown.

Found in 49 products across 21 brands

And 37 more products in our database.

The worst offender

Compared to Numbrrrz.

Here’s how the lowest-scoring product containing bht (butylated hydroxytoluene) compares.

View full ingredient analysis for Blistex Medicated Lip Ointment
Blistex Medicated Lip Ointment

Blistex Medicated Lip Ointment

Blistex

Ingredients23
Flagged13
Safety Score1/10
Numbrrrz Organic Lip Balm

Numbrrrz

Organic Lip Balm

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Safe alternatives

What to use instead.

tocopherol (vitamin E)
rosemary extract
ascorbic acid (vitamin C)
sunflower seed oil

What Numbrrrz uses instead

Numbrrrz uses Vitamin E as a natural antioxidant preservative in all formulations — effective protection against rancidity without synthetic BHT.

Questions

Quick answers.

Is BHT safer than BHA?
BHT is generally considered less concerning than BHA — it lacks the IARC carcinogen classification. However, it still has endocrine disruption potential and is best avoided when natural alternatives exist.
Can I avoid BHT in my daily routine?
Yes. Many clean beauty brands use vitamin E, rosemary extract, or other natural antioxidants instead. Check ingredient labels and choose products that list these alternatives.
Is BHT an endocrine disruptor?
Animal studies suggest BHT may affect thyroid and reproductive hormones. While the evidence is less definitive than for BHA, the European Commission's Scientific Committee on Consumer Safety has flagged BHT for endocrine disruption potential.
Is BHT the same as BHA?
They are closely related synthetic antioxidants but are different chemicals. BHA is butylated hydroxyanisole and BHT is butylated hydroxytoluene. BHA carries an IARC possible carcinogen classification; BHT does not, but both have endocrine disruption concerns.
What are other names for BHT on ingredient labels?
Look for 'butylated hydroxytoluene,' 'BHT,' 'E321,' or '2,6-di-tert-butyl-4-methylphenol.' It appears in lipsticks, moisturizers, and many processed foods as an antioxidant preservative.
Does Numbrrrz use BHT?
No. Numbrrrz uses Vitamin E (tocopherol) as a natural antioxidant preservative. Vitamin E prevents rancidity while also providing skin-nourishing benefits that synthetic BHT cannot offer.
Related comparisons

How these brands stack up.

Brands that use bht (butylated hydroxytoluene) — see how they compare.

Choose clean

Skip the bht (butylated hydroxytoluene).

Four organic ingredients. Zero toxins. The lip balm your body deserves.