Ingredient
3-Nitro-P-Hydroxyethylaminophenol
3-Nitro-P-Hydroxyethylaminophenol is flagged for pregnancy. The concern behind the strongest flag is absorbed into the body.
- HC Yellow No. 2
- 3-Nitro-4-Hydroxyethylaminophenol
Verdict by profile
Truva checks every ingredient against six profiles. Jump to any of them for the full assessment.
- Strongest verdict
- Caution Advised
- Its verdict for pregnancy, the profile this one is worst in
- Profiles flagged
- 1 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 2 of 5
- Higher means more likely to sting or redden
3-Nitro-P-Hydroxyethylaminophenol and pregnancy
Caution Advised
- Absorbed into the body
3-Nitro-p-hydroxyethylaminophenol (HC Yellow No. 2) is a synthetic hair dye belonging to the nitro-aromatic compound class. It's used in semi-permanent and temporary hair coloring products to provide yellow tones. Hair dyes, particularly those containing nitro compounds, have been subject to scrutiny regarding pregnancy safety. The safety of hair dyes during pregnancy is debated among healthcare providers. While large epidemiological studies have not found strong evidence linking hair dye use to birth defects, specific data on individual dye compounds like 3-nitro-p-hydroxyethylaminophenol is limited. ACOG states that hair dye use during pregnancy is likely safe, but notes that some women prefer to minimize chemical exposures, especially during the first trimester. The concern with nitro-aromatic compounds is their potential for systemic absorption through the scalp and theoretical genotoxic properties. The SCCS has evaluated this ingredient and permits its use with restrictions, but pregnancy-specific guidance is not detailed. Many obstetricians suggest that if women want to color their hair during pregnancy, waiting until after the first trimester may be prudent. Some recommend highlighting or other techniques that minimize scalp contact. Given the lack of comprehensive pregnancy safety data for this specific nitro dye and the availability of alternative coloring methods, many pregnant women choose to either avoid hair dyes or opt for techniques that limit scalp exposure.
3-Nitro-P-Hydroxyethylaminophenol and breastfeeding
Safe to Use
3-Nitro-p-hydroxyethylaminophenol is a hair dye ingredient that would have minimal contact with breast tissue. When used on the scalp for hair coloring, it's not applied to areas where direct infant contact would occur. The AAD generally considers hair dye use safe during breastfeeding. Systemic absorption of hair dye ingredients through the scalp is minimal, and any absorbed amounts would be metabolized before significantly affecting breast milk composition. There is no evidence that hair dye use during breastfeeding poses risks to breastfed infants. Most dermatologists and pediatricians do not restrict hair dye use during breastfeeding. Standard precautions like using products in well-ventilated areas and following manufacturer instructions are sufficient.
3-Nitro-P-Hydroxyethylaminophenol and postpartum
Safe to Use
3-Nitro-p-hydroxyethylaminophenol can be used in hair dye products during the postpartum period when not breastfeeding. Without pregnancy or breastfeeding considerations, the main concerns are the same as for the general population: potential allergic reactions and skin irritation. Postpartum women who are not breastfeeding can use hair dyes containing this ingredient following standard precautions. Patch testing is recommended to check for allergic reactions, especially if this is the first use or if there's a history of dye sensitivity.
3-Nitro-P-Hydroxyethylaminophenol and trying to conceive
Safe to Use
3-Nitro-p-hydroxyethylaminophenol can generally be used in hair dye products when trying to conceive. While some women prefer to adopt pregnancy-safe routines in advance, there's no strong evidence that hair dye use affects fertility or conception. If you're actively trying to conceive and want to be maximally cautious, you could consider switching to alternative coloring methods. However, most fertility specialists don't restrict hair dye use during the preconception period.
3-Nitro-P-Hydroxyethylaminophenol and PCOS
Safe to Use
3-Nitro-p-hydroxyethylaminophenol is a hair dye ingredient with no known hormonal activity. It doesn't interact with androgen or estrogen pathways relevant to PCOS. There are no contraindications for using hair dyes containing this ingredient with PCOS. The main considerations are the same as for the general population: potential for allergic reactions and skin sensitivity. Women with PCOS can use products containing 3-nitro-p-hydroxyethylaminophenol without specific concerns related to their condition. Follow standard hair dye safety practices including patch testing.
3-Nitro-P-Hydroxyethylaminophenol and general use
Safe to Use
- Common allergen
- Irritant
3-Nitro-p-hydroxyethylaminophenol (HC Yellow No. 2) is a synthetic nitro dye used in semi-permanent and temporary hair coloring products. It's one of several nitro-aromatic compounds approved for use in hair dyes under specific concentration limits. The main concerns with this ingredient are potential allergic reactions and skin irritation. According to the SCCS, some individuals may develop contact dermatitis or allergic sensitization to nitro dyes. The risk of reaction varies among individuals, and patch testing before use is recommended. The SCCS has evaluated this ingredient and determined it's safe when used at approved concentrations with appropriate warnings on product labels. The EU Cosmetics Regulation requires products containing this ingredient to include warnings about potential allergic reactions and instructions for patch testing. When used according to manufacturer directions and at regulated concentrations, it's considered acceptably safe for hair coloring. Those with sensitive skin or a history of dye allergies should exercise caution and always perform a patch test before use.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of 3-Nitro-P-Hydroxyethylaminophenol, each one with its own page here.
Ingredients that raise the same concerns.
Where this came from
Truva summarises published guidance from bodies including ACOG, the FDA, the EU SCCS and the Cosmetic Ingredient Review. It has no access to your medical history and it is not a substitute for your doctor, dermatologist or midwife. These assessments have not been reviewed by a clinician, and nothing here is a diagnosis or a prescription. If you are pregnant, breastfeeding or being treated for PCOS, take the ingredient list to the person looking after you.
Assessment last pulled from the ingredient database on .
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A label has thirty of them. Truva reads the whole list at once and answers for the profile you set: pregnancy, breastfeeding, postpartum, trying to conceive, PCOS, or general use.
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