Ingredient
2-Amino-6-Chloro-4-Nitrophenol
2-Amino-6-Chloro-4-Nitrophenol is flagged for pregnancy, breastfeeding and trying to conceive. The concern behind the strongest flag is absorbed into the body and fetal development.
- Hair Dye Coupler HC Red No. 9
- 4-Nitro-2-amino-6-chlorophenol
Verdict by profile
Truva checks every ingredient against six profiles. Jump to any of them for the full assessment.
- Strongest verdict
- Not Recommended
- Its verdict for pregnancy, the profile this one is worst in
- Profiles flagged
- 3 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 3 of 5
- Higher means more likely to sting or redden
2-Amino-6-Chloro-4-Nitrophenol and pregnancy
Not Recommended
- Absorbed into the body
- Fetal development
2-Amino-6-Chloro-4-Nitrophenol is a synthetic hair dye ingredient that belongs to the nitro-aromatic compound family. It is used in oxidative hair coloring systems to produce red and brown tones. While specific pregnancy studies on this exact compound are limited, hair dyes containing nitrophenol derivatives have raised concerns due to potential systemic absorption through the scalp. Nitro-aromatic compounds can theoretically cross the placental barrier. ACOG states that while occasional hair dyeing after the first trimester is likely safe, they recommend minimizing chemical exposure during pregnancy, particularly with professional-strength products. The European Commission's Scientific Committee on Consumer Safety has noted that aminophenols and nitrophenols in hair dyes require careful safety evaluation due to their chemical reactivity. Most obstetricians and dermatologists recommend postponing hair dye use during the first trimester when fetal organ development occurs. After the first trimester, many experts suggest that if hair coloring is desired, choose ammonia-free formulas, ensure good ventilation, minimize scalp contact, and consider highlights rather than full-head coloring to reduce scalp exposure.
2-Amino-6-Chloro-4-Nitrophenol and breastfeeding
Caution Advised
- Absorbed into the body
- Infant exposure
2-Amino-6-Chloro-4-Nitrophenol is used in oxidative hair dye formulations. When applied to the scalp, there is potential for systemic absorption, though the extent depends on application time, scalp condition, and product formulation. While specific data on transfer to breast milk is lacking, the American Academy of Pediatrics and dermatologists generally note that small molecular weight synthetic chemicals used in hair dyes could theoretically enter the bloodstream and subsequently breast milk. The AAD suggests that breastfeeding mothers who wish to color their hair wait until after the postpartum period when possible, or use semi-permanent dyes that have less scalp contact time. The risk is considered lower than during pregnancy, but caution is still advised with professional-strength products. If hair coloring is necessary during breastfeeding, dermatologists recommend using products with minimal scalp contact (like highlights), choosing ammonia-free formulas, ensuring proper ventilation, and considering timing the application right after breastfeeding to maximize the interval before the next feeding.
2-Amino-6-Chloro-4-Nitrophenol and postpartum
Safe to Use
- Irritant
- Common allergen
For postpartum women who are not breastfeeding, 2-Amino-6-Chloro-4-Nitrophenol in hair dyes presents primarily localized skin concerns rather than systemic risks. The main considerations are contact dermatitis and potential allergic sensitization. The EU requires patch testing recommendations for products containing this ingredient, and dermatologists advise following manufacturer instructions carefully. Postpartum hormonal changes can sometimes increase skin sensitivity, so women who previously tolerated hair dyes may experience more irritation. Standard precautions include performing patch tests, using protective gloves, ensuring adequate ventilation, and following recommended processing times.
2-Amino-6-Chloro-4-Nitrophenol and trying to conceive
Caution Advised
- Absorbed into the body
- Builds up in tissue
2-Amino-6-Chloro-4-Nitrophenol is a synthetic hair dye ingredient. Women trying to conceive should approach this ingredient with similar caution as early pregnancy, since conception timing is often uncertain. Fertility specialists and obstetricians typically recommend that women who are actively trying to conceive minimize exposure to synthetic hair dye chemicals, particularly in the periconceptional period. While direct evidence linking this specific ingredient to fertility issues is lacking, the precautionary principle suggests avoiding unnecessary chemical exposures when preparing for pregnancy. Many reproductive endocrinologists advise waiting to use permanent hair dyes until after a pregnancy is established and the first trimester has passed, or opting for gentler alternatives like semi-permanent dyes or highlighting techniques that minimize scalp contact.
2-Amino-6-Chloro-4-Nitrophenol and PCOS
Safe to Use
2-Amino-6-Chloro-4-Nitrophenol is a hair dye coupler with no known endocrine-disrupting properties or hormonal effects relevant to PCOS. It functions purely as a colorant through oxidative coupling reactions. Women with PCOS may use hair dyes containing this ingredient without specific concerns related to their condition. The ingredient does not affect androgen levels, insulin sensitivity, or other PCOS-related hormonal pathways. Standard precautions for hair dye use apply, including patch testing to check for allergic reactions. For women with PCOS who experience hirsutism (excess hair growth), hair dyes and colorants are commonly used cosmetic options without contraindications related to the underlying condition.
2-Amino-6-Chloro-4-Nitrophenol and general use
Safe to Use
- Irritant
- Common allergen
2-Amino-6-Chloro-4-Nitrophenol is a regulated hair dye ingredient approved for use in both the EU and US under specific concentration limits. It serves as a coupler in oxidative hair coloring systems, helping to create red and brown color tones. The primary concerns for the general population are localized skin reactions. Contact dermatitis and allergic sensitization can occur in susceptible individuals, which is why the EU mandates warning labels and patch testing recommendations on products containing this ingredient. The European Commission's Scientific Committee on Consumer Safety has evaluated this ingredient and permits its use with restrictions. Studies show that when used according to manufacturer instructions, most people tolerate it without adverse effects. To minimize risk, consumers should always perform a patch test 48 hours before use, follow application instructions precisely, use protective gloves, ensure adequate ventilation, and avoid leaving the product on longer than recommended. Those with sensitive skin or a history of dye allergies should consult a dermatologist before use.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of 2-Amino-6-Chloro-4-Nitrophenol, 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 .
One ingredient is the easy case.
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.
Download on theApp Store