The Lab
Specimen No. 0018
AvoidSyntheticpreservativeantioxidant

BHA (Butylated Hydroxyanisole)

butylated hydroxyanisole · bha · tert-butyl-4-methoxyphenol

Synthetic antioxidant/preservative used in cosmetics and food. Classified as a possible human carcinogen and suspected hormone disruptor.

high confidence
Researched April 18, 2026

Concerns

  • IARC Group 2B possible carcinogen
  • Endocrine disruption — interferes with thyroid and estrogen [inference]
  • EU restricts concentration in cosmetics
  • Bioaccumulates in body tissue

Regulatory flags

  • EU classifies BHA as endocrine disruptor category 1
  • IARC Group 2B possible carcinogen
  • EU restricts in cosmetics — max 0.5%

Commonly found in

LipstickMoisturizerFragranceProcessed foodFood packaging

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.

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LabelCleared verdict badge: BHA (Butylated Hydroxyanisole) — Avoid
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