Korean: 1,5-디히드록시나프탈렌 · CAS 83-56-7 · Functions: hair dyeing
Restricted MFDS restricted ingredients
Conditions (official MFDS text, Korean):
* 배합한도 : ∙ 산화염모에 0.5 %
∙ 기타 제품에는 사용금지
Source: MFDS — cosmetic ingredient use restrictions · checked Oct 16, 2026
Restricted Annex III/238
Maximum: b) 1.0%
Conditions: Product type: a) Hair dye substance in oxidative hair dye products b) Hair dye substance in non-oxidative hair dye products a) After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 1.0%
Required label warning: Hair colourants can cause severe allergic reactions Read and follow instrctions
Source: EU CosIng — Annex III · checked Oct 16, 2026
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
How 1,5-Naphthalenediol is treated in 3 more markets, 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 |
|---|---|---|
| CN China | Restricted | MFDS summary (Korean): * 【화장품 중 최대사용농도】 배합한도 (산화형 염색제) : 0.5% * 【화장품 중 최대사용농도】 배합한도 (비산화형 염색제) : 1% |
| AS ASEAN (10 countries) | Restricted | MFDS summary (Korean): * 【Restrictions】 Field of application and/or use : (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non-oxidative hair dye products * 제한 【사용 범위】 : (a) 산화형 염모제에 염색 성분으로 (b) 비산화형 염모제에 염색 성분으로 * 【Restrictions】 Maximum authorised concentration in the finished... |
| TW Taiwan | Restricted | MFDS summary (Korean): ※ 染髮、脫色、脫染及燙髮產品之應刊載之注意事項，應依衛生福利部公告刊載之。 ※ 染髮產品之限量標準：係指該成分依產品使用說明書混合後之最高允許使用量。 ※ 化粧品之外包裝或容器，應明顯標示本表所列成分之注意事項。因外包裝或容器表面積過小或其他特殊情形致不能標示者，應於標籤、仿單或以其他方式刊載之。 ※ 本表所稱之口腔製劑，包含非藥用牙膏、漱口水類及美白牙齒類等化粧品。 ※ 化粧品宣稱效能者，須符合化粧品標示宣傳廣告涉及虛偽誇大或醫療效能認定準則規定。 * 단서조항 : ※ 染髮、脫色、脫染及燙髮產品之應刊載之注意事項，應依衛生福利部公告刊載之。 ※... |
Source: MFDS cosmetic ingredient use restrictions — overseas regulations · checked Oct 16, 2026
1,5-Naphthalenediol 1,5-디히드록시나프탈렌
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.