Methylparaben

Methyl parabenE218Methyl ester of para-hydroxybenzoic acid

Preservative

Methylparaben is a chemical used to prevent the growth of bacteria and mold in products. It's often used in cosmetics and personal care products to keep them fresh and safe to use.

What it is

Methylparaben is a synthetic ester of para-hydroxybenzoic acid, used as a broad-spectrum antimicrobial agent.

Found in

cosmetics, personal care products, pharmaceuticals, food preservatives

The concern

Methylparaben has been linked to hormone disruption and may cause skin irritation in some individuals.

Legal status

Authorized for use in cosmetics and personal care products in the US and EU, but some countries have restrictions on its use in leave-on products.

Moderate Concern

Methylparaben has been shown to have some estrogenic activity, which may raise concerns for hormone-sensitive individuals or those exposed to high concentrations.

Evidence & sources

Authority source

Safety basis: FDA

FDA assessment

Article / explainer

Assessing systemic absorption and estrogenic potential of methylparaben and propylparaben in consumer use.

PubMed study

PubMed • Consumer-use exposure study focused on methylparaben and propylparaben absorption and estrogenic potential.

Read source

Video explainer

No highly relevant video explainer found yet.

Common questions answered

Common questions about methylparaben

Preservative Debate

Why is methylparaben used?: Methylparaben helps prevent bacteria and mold growth, which keeps products stable and safer to use over time.
Is methylparaben the same as propylparaben?: No. They are both parabens, but they are different preservatives and may be used together to protect a formula against a wider range of microbes.
Should everyone avoid methylparaben?: Not necessarily. Many products use parabens at low allowed levels, but people with sensitivity concerns may prefer paraben-free options or compare product type and frequency of use.

These answers provide plain-English context. Safety guidance comes from the authority and research sources above.