Ask KBeauty Verified™

KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.

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p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone)

Korean: p-하이드록시아니솔(4-메톡시페놀；하이드로퀴논모노메틸에터；모노벤존) · CAS 150-76-5 ·

KR South Korea (MFDS)

No specific rule on file.

EU European Union (CosIng)

No specific rule on file.

US United States (FDA)

No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.

Other markets

How p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) is treated in 1 more market, from the overseas cosmetic regulation database compiled by Korea's MFDS. Always confirm with the regulator of that country before selling there.

Market	Status	Conditions
TW Taiwan	Prohibited	—

Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 17, 2026

Also listed as

p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) p-하이드록시아니솔(4-메톡시페놀；하이드로퀴논모노메틸에터；모노벤존)

Information only, not medical advice. Rules change — always check the linked official source. If you are pregnant, have a skin condition or allergies, ask a dermatologist or pharmacist.

Frequently asked questions

Is p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) banned in the European Union?

We found no specific rule for it in the EU's CosIng records. That is not an approval or a safety statement.

Is p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) banned in South Korea?

We found no specific rule for it in Korea's MFDS records. That is not an approval or a safety statement.

Is p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) allowed in cosmetics in the U.S.?

We found no specific rule for it in the FDA's records. That is not an approval or a safety statement.

What is p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone) called on Korean labels?

Korea's MFDS standard Korean name is p-하이드록시아니솔(4-메톡시페놀；하이드로퀴논모노메틸에터；모노벤존).

What is the CAS number of p-Hydroxyanisole (4-Methoxyphenol ； Hydroquinone monomethyl ether ； Monobenzone)?

CAS 150-76-5 (from official records).