Ingredient
CI 26100
CI 26100 is flagged for pregnancy, trying to conceive, breastfeeding, postpartum, PCOS and general use. The concern behind the strongest flag is absorbed into the body and fetal development.
- Solvent Red 3
- D&C Red No. 17
- Sudan III
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
- 6 of 6
- Counting avoid, high risk and medium risk
- Irritancy
- 0 of 5
- Higher means more likely to sting or redden
CI 26100 and pregnancy
Not Recommended
- Absorbed into the body
- Fetal development
CI 26100 is a synthetic azo dye used to create red coloring in cosmetics. Azo dyes can break down into aromatic amines, some of which have been identified as potential carcinogens. During pregnancy, the concern with CI 26100 stems from its potential for systemic absorption through the skin and its classification as a banned substance in EU cosmetics due to safety concerns. The SCCS has noted that certain azo dyes may pose developmental risks, and the precautionary principle suggests avoiding substances banned in major regulatory markets. While specific pregnancy studies are limited, the general toxicological profile and regulatory bans indicate potential fetal development concerns. The European Union has prohibited CI 26100 in cosmetics under the EU Cosmetics Regulation due to safety concerns. ACOG recommends avoiding cosmetic ingredients that are banned in major regulatory markets during pregnancy. Most dermatologists and obstetricians advise pregnant women to choose products with ingredients that have clear safety profiles rather than those with regulatory restrictions.
CI 26100 and breastfeeding
Not Recommended
- Absorbed into the body
- Infant exposure
CI 26100 is a synthetic azo dye banned in EU cosmetics. Azo dyes can potentially be absorbed systemically through the skin, raising concerns about transfer to breast milk. While specific studies on CI 26100 transfer to breast milk are lacking, the compound's lipophilic nature and systemic absorption potential suggest it could reach breast milk. The European Commission's decision to ban this colorant in cosmetics reflects broader safety concerns that extend to breastfeeding mothers. Given that infants have immature metabolic systems and are more vulnerable to chemical exposures, most pediatricians and dermatologists recommend avoiding ingredients with regulatory bans during breastfeeding. The AAD and pediatric associations generally recommend that breastfeeding mothers avoid cosmetic ingredients that have been banned in major regulatory markets, as the bans often reflect unresolved safety questions that are particularly relevant for vulnerable populations like breastfed infants.
CI 26100 and postpartum
Not Recommended
- Carcinogen concern
- Common allergen
CI 26100 remains a concerning ingredient for postpartum women not breastfeeding due to its EU ban and potential carcinogenic metabolites. The SCCS has identified safety concerns with this azo dye that apply to all users. While postpartum women not breastfeeding don't have infant exposure concerns, the underlying safety issues that led to the EU ban remain relevant. The potential for skin sensitization and formation of carcinogenic metabolites makes this an ingredient to avoid regardless of reproductive status. Many dermatologists recommend choosing cosmetics with safer, approved colorants.
CI 26100 and trying to conceive
Not Recommended
- Absorbed into the body
- Builds up in tissue
CI 26100 is a synthetic azo dye banned in EU cosmetics. Women trying to conceive should follow pregnancy precautions, as conception timing is unpredictable and early pregnancy is a critical period for fetal development. Reproductive health specialists recommend that women trying to conceive begin avoiding potentially harmful substances before conception occurs. Given CI 26100's EU ban and concerns about systemic absorption and metabolite formation, it's prudent to eliminate this ingredient from your routine while trying to conceive. The precautionary approach ensures no exposure during the critical early weeks of pregnancy when women may not yet know they're pregnant.
CI 26100 and PCOS
Not Recommended
- Common allergen
CI 26100 is a synthetic colorant with no specific interactions with PCOS or hormonal balance. However, women with PCOS often have inflammatory skin conditions that may be more reactive to potentially sensitizing ingredients. The primary concern with CI 26100 for PCOS relates to its general safety profile and potential for allergic reactions rather than hormone disruption. The EU ban reflects broader safety concerns that apply to all consumers. Women with PCOS who experience acne or sensitive skin may be particularly vulnerable to irritation from questionable colorants. Dermatologists treating PCOS-related skin conditions typically recommend avoiding unnecessary additives like synthetic dyes, especially those with regulatory concerns, in favor of products with minimal, well-studied ingredients.
CI 26100 and general use
Not Recommended
- Carcinogen concern
- Common allergen
CI 26100 is a synthetic red azo dye used for cosmetic coloring. It's banned in the European Union but permitted in limited applications in the United States. The SCCS has raised concerns about CI 26100 due to potential carcinogenic metabolites formed when azo dyes break down in the body. Some individuals may experience allergic contact dermatitis from azo dyes. The compound's systemic absorption potential and formation of aromatic amines has led to its prohibition in EU cosmetics. Given the EU ban and ongoing safety concerns, many dermatologists recommend choosing products with alternative, safer colorants. The FDA still permits CI 26100 in certain applications, but the discrepancy between EU and US regulations highlights unresolved safety questions. Consumers seeking maximum safety often opt for products using mineral-based or natural colorants instead.
Everything else flagged for the same profiles
Related ingredients
Ingredients suggested in place of CI 26100, 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.
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