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Lead acetate vs Butylated Hydroxyanisole: which is worse?

Quick answer: Lead acetate carries the heavier risk profile. Lead acetate is banned in the EU and allowed in the US; Butylated Hydroxyanisole is in the EU and in the US.

PropertyLead acetateButylated Hydroxyanisole
EU statusBanned
US statusAllowed
Risk levelhigh
Banned inEuropean UnionJapan (banned for foods containing fats and oils)
Restricted inEuropean Union (restricted; banned in baby food), United Kingdom
Categoryheavy metaladditive
Where it hidesprogressive hair dye, men's hair color

What is Lead acetate?

Lead acetate is a lead compound used in progressive darkening hair dyes.

What is Butylated Hydroxyanisole?

Butylated hydroxyanisole (BHA) is a synthetic phenolic antioxidant preservative derived from petroleum (see also bha entry). It is a mixture of 2-BHA and 3-BHA isomers, used to prevent oxidative rancidity in fats, oils, and fat-containing foods. Chemical formula C11H16O2.

Documented risks

Lead acetate: Lead is a potent neurotoxin with no safe level. Banned in EU cosmetics; the US FDA revoked its authorization in 2018.

Butylated Hydroxyanisole: IARC classifies BHA as Group 2B (possible human carcinogen) based on forestomach tumor studies in rodents at high doses. The NTP lists it as 'reasonably anticipated to be a human carcinogen.' EFSA's 2012 review found endocrine-disrupting potential. Japan banned it for food use. The FDA permits it at 0.02% of fat content. Concerns about estrogen-receptor interaction have been documented in animal studies. Contact dermatitis from cosmetic use is reported.

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