2.5
A synthetic hair dye ingredient that can effectively deposit color but may cause skin irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient reviewBeauty ingredient research
Beauty ingredients explained in plain English
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Showing 17 of 17
AllUV absorberUV filterabrasiveabsorbentacne treatmentactiveactive ingredientadhesivealkalizing agentamino acidanti-aginganti-androgenanti-cavityanti-cavity agentanti-inflammatoryanti-irritantanticariesanticavity agentantidandruffantifungalantimicrobialantioxidantantiperspirantantiplaqueastringentbarrier repairbarrier supportbarrier-repairbarrier-supportbinderbinding agentbiotechbiotechnologybond-builderbotanicalbotanical extractbotanical oilbotanical waterbrighteningbrightening agentbufferbuffering agentcell-communicating ingredientceramidechelating agentchemicalchemical intermediateclaycleansercleansingcleansing agentcolorantconditionerconditioningconditioning agentcooling agentcosmeticcosmetic additivecosmetic colorantcosmetic ingredientcosmetic pigmentcosmetic powdercosmetic-texturizercosmetic-waxcosmeticscrosslinking agentdelivery agentdelivery systemdenaturantdeodorantdeodorant agentdepigmenting agentdepilatorydepilatory agentdesensitizing agentdyedye intermediatedye precursordye-intermediateemollientemulsifierenzymeessential oilexfoliantexperimentaleyelashfermentfilm formerfilm-formerfilm-formingfilm-forming agentfirming agentfixativeflavoring agentformulationfragrancefragrance ingredientfunctional ingredientgashair carehair colorhair coloranthair conditionerhair dyehair removalhair-carehair-colorhaircarehumectantindustrialinsecticideintermediatelashlash carelash enhancerlash-and-browlip carelipidmakeupmarine extractmasking agentmicrobiomemicrobiome modulatormineralmoisturizernail carenail-careocclusiveoilopacifieropacifying agentoptical agentoral careotheroxidative dyeoxidative dye precursoroxidizing agentpH adjusterpain reliefpenetration enhancerpeptidepersonal careph adjusterpharmaceuticalpheromonepigmentplant oilplasticizerpolymerpolymer precursorprebioticprescription-drugpreservativepreservative boosterprobioticprocessing agentprocessing aidpropellantproteinpurifyingreducing agentretinoidscalp caresebum regulatorsebum-regulatorself-tannerself-tanningsensory additivesensory agentsensory modifiersiliconeskin barrierskin barrier supportskin conditionerskin conditioningskin conditioning agentskin lighteningskin protectantskin-conditioningskin-conditioning agentskin-identicalskin-identical ingredientskin-lighteningskin-lightening agentskincaresolventsoothingsoothing agentstabilizerstimulantsunscreensurfactantsyntheticsynthetic colorantsynthetic dyesynthetic resinsynthetic-coloranttexture enhancertexturizerthickenertoneruv-absorberuv-filtervasoactivevasodilatorviscosity controlviscosity controllingviscosity controlling agentvitaminwax
3.0
A synthetic hair dye ingredient that provides yellow tones in permanent color, but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review2.5
A synthetic hair dye ingredient that can provide color but may cause skin irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair-colordye
Read ingredient review2.5
A synthetic hair dye ingredient that can provide vibrant color but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.5
A synthetic hair dye ingredient that provides color but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.0
A synthetic dye used in hair color; generally safe in regulated amounts but can cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.5
A synthetic hair dye ingredient that helps create long-lasting color but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review2.5
A synthetic hair dye ingredient that can provide color but may cause skin irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair-colordye
Read ingredient review2.5
A synthetic hair dye ingredient that can cause allergic reactions in sensitive individuals; its safety is regulated but requires caution.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review2.5
A synthetic hair dye ingredient that can provide color but may cause skin irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.0
A synthetic hair dye that provides black color but may cause irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair-colordye
Read ingredient review3.5
HC Red No. 11 is a synthetic hair dye that adds red tones but may cause irritation in sensitive individuals or with frequent use.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.5
A synthetic blue dye for semi-permanent hair color that is generally safe but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.5
A synthetic dye that adds vibrant color to hair but may cause irritation for sensitive scalps.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review3.0
A synthetic dye that helps create deep, long-lasting hair colors but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review2.5
A common but potent hair dye ingredient that can cause allergic reactions in sensitive individuals.
Irritation
high
Source
synthetic
beautyhair colordye
Read ingredient review2.5
Sodium Picramate is a synthetic dye used in hair color, but it can be a skin sensitizer and is best avoided by those with sensitive scalps.
Irritation
moderate
Source
synthetic
beautyhair colordye
Read ingredient review