Butylparaben
Notable concerns
INCI · ButylparabenCAS 94-26-8
Also known as: Butyl 4-hydroxybenzoate
Preservative
In plain language
A long-chain paraben that has faced the most regulatory scrutiny due to its relatively higher potential for endocrine disruption.
Restricted heavily in many regions and completely banned in specific products (like leave-on diaper area products) due to endocrine concerns.
Concerns & harms
Concern
Endocrine Disruption Potential
Long-chain parabens demonstrate higher lipophilicity and binding affinity to estrogen receptors compared to their short-chain counterparts.
Moderate evidence
Where it can be sold
Simplified regulatory status by market — for guidance, not compliance advice.
European UnionRestricted
Maximum 0.14%. Banned in leave-on products designed for application on the nappy area of children under 3 years.
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Opinion on Parabens ↗
Scientific Committee on Consumer Safety (SCCS) · 2013
Regulatory