KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.
Reading time:
Views: 0 ChatGPT: 2 Claude: 1 Google · Gemini: 1 Perplexity: 0 Meta AI: 0 Amazon: 0 Others: 2
Read by AI & crawlers
ChatGPT2
Claude1
Google · Gemini1
Perplexity0
Meta AI0
Amazon0
Others2
Named by what the crawler says it is; look-alikes we detect are counted under Others. Google · Gemini includes Googlebot, Google’s search crawler, whose index Google also uses for its AI features; other search engines and bots are in Others. AI visibility →
CI 42051 /Acid Blue 3
KR South Korea (MFDS)
No specific rule on file.
EU European Union (CosIng)
Prohibited only in certain forms or usesAnnex II/1356
Conditions: Ethanaminium, N-(4-((4-diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) (Acid Blue 3; CI 42051) when used as a substance in hair dye products
No specific rule on file. The FDA regulates few cosmetic ingredients by name; no rule does not mean approval.
Also listed as
CI 42051 /ACID BLUE 3
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 CI 42051 /Acid Blue 3 banned in the European Union?
In the EU's CosIng records it is listed as “Prohibited only in certain forms or uses” (EU CosIng — Annex II). It is not a general ban — the condition reads: “Ethanaminium, N-(4-((4-diethylamino)phenyl)(5-hydroxy-2,4-disulfophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, calcium salt (2:1) (Acid Blue 3; CI 42051) when used as a substance in hair…”
Is CI 42051 /Acid Blue 3 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 CI 42051 /Acid Blue 3 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.
KBeauty Verified™ — K-beauty checked against official records from Korea, the EU and the U.S.
Reading time:
Views: 0 ChatGPT: 2 Claude: 1 Google · Gemini: 1 Perplexity: 0 Meta AI: 0 Amazon: 0 Others: 2
Read by AI & crawlers
ChatGPT2
Claude1
Google · Gemini1
Perplexity0
Meta AI0
Amazon0
Others2
Named by what the crawler says it is; look-alikes we detect are counted under Others. Google · Gemini includes Googlebot, Google’s search crawler, whose index Google also uses for its AI features; other search engines and bots are in Others. AI visibility →