The Lab
Specimen No. 0019
AvoidSyntheticpreservativeantioxidant

BHT (Butylated Hydroxytoluene)

butylated hydroxytoluene · bht · 2,6-di-tert-butyl-4-methylphenol

Synthetic antioxidant used to extend shelf life in cosmetics and food. Linked to hormone disruption and potential carcinogenicity.

medium confidence
Researched April 18, 2026

Concerns

  • Possible endocrine disruptor — estrogenic activity in animal studies
  • Liver enzyme induction at high doses
  • Bioaccumulates in fatty tissue
  • Some evidence of carcinogenicity [inference]

Regulatory flags

  • EU restricts in cosmetics — max 0.8%
  • Some endocrine disruption evidence at high doses

Commonly found in

MoisturizerLip productsHair productsProcessed foodPackaged cereals

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

Check another ingredient

Search our database of scored cosmetic, food, and household ingredients — or scan a full product label.

Open the Ingredient Lab

Embed this verdict

LabelCleared verdict badge: BHT (Butylated Hydroxytoluene) — Avoid
<a href="https://labelcleared.com/lab/bht-cosmetic"><img src="https://labelcleared.com/embed/bht-cosmetic/badge.svg" alt="LabelCleared verdict badge: BHT (Butylated Hydroxytoluene) — Avoid" height="34"></a>