HC Yellow No. 4
2-((2-nitro-4-((2-hydroxyethyl)amino)phenyl)amino)ethanol; N-(2-hydroxyethyl)-2-nitro-p-phenylenediamine
Nitrophenylenediamine-class direct dye; sensitization potential. EU permits use at 1.5% in non-oxidative dyes. Skin contact and eye contact should be minimized.
Function & Common Use
Direct Hair Dye
Hair Dyes
Semi-permanent hair color, fashion hair color
Synthetic
Concentration Limits
Not explicitly specified; permitted under BIS IS 4707
1.5% in non-oxidative (direct) hair dye products
No federal limit specified
Restricted; MFDS safety standards apply
Format restriction: Non-oxidative (direct) hair dye use only; label warning required; avoid eye contact
Baby restriction: Yes
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is HC Yellow No. 4 safe to use in skincare?
HC Yellow No. 4 has a Medium concern rating. Nitrophenylenediamine-class direct dye; sensitization potential. EU permits use at 1.5% in non-oxidative dyes. Skin contact and eye contact should be minimized.
Is HC Yellow No. 4 allowed in India?
HC Yellow No. 4 is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is Not explicitly specified; permitted under BIS IS 4707.
What is HC Yellow No. 4 used for in cosmetics?
HC Yellow No. 4 functions as: Direct Hair Dye. It is commonly found in: Semi-permanent hair color, fashion hair color.
Can HC Yellow No. 4 cause an allergic reaction?
Yes. HC Yellow No. 4 has an allergen flag (Yes). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is HC Yellow No. 4 safe for babies?
HC Yellow No. 4 has baby/child restrictions: Yes. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex III (restricted)
Identifiers
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