Ask KBeauty Verified™

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

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ChatGPT: 2 Claude: 1 Google · Gemini: 0 Perplexity: 0 Meta AI: 0 Amazon: 0 Others: 0

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ChatGPT2

Claude1

Google · Gemini0

Perplexity0

Meta AI0

Amazon0

Others0

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 →

Fluorescent Brightener 236

Korean: 플루오레센트브라이트너236 · CAS 3333-62-8 · Functions: hair dyeing

KR South Korea (MFDS)

Prohibited MFDS prohibited ingredients

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

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.

Also listed as

FLUORESCENT BRIGHTENER 236 플루오레센트브라이트너236

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 Fluorescent Brightener 236 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 Fluorescent Brightener 236 banned in South Korea?

In Korea's MFDS records it is listed as “Prohibited” (MFDS — cosmetic ingredient use restrictions).

Is Fluorescent Brightener 236 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 Fluorescent Brightener 236 used for in cosmetics?

The EU's CosIng inventory lists its functions as: hair dyeing.

What is Fluorescent Brightener 236 called on Korean labels?

Korea's MFDS standard Korean name is 플루오레센트브라이트너236.

What is the CAS number of Fluorescent Brightener 236?

CAS 3333-62-8 (from official records).