4.0
A potent synthetic brightener that targets dark spots and uneven tone, but can be irritating for sensitive skin.
Irritation
moderate
Source
synthetic
beautyskincarebrightening
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 16 of 16
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
4.0
Aloesin is a gentle, plant-derived brightener that can help fade dark spots without the irritation of stronger alternatives.
Irritation
low
Source
natural
beautyskincarebrightening
Read ingredient review4.3
Alpha-arbutin is a well-tolerated, plant-based brightener that gently fades dark spots without the irritation of stronger alternatives.
Irritation
low
Source
natural
beautyskincarebrightening
Read ingredient review4.0
A gentler, more stable version of kojic acid that helps fade dark spots and even out skin tone without the irritation of the original.
Irritation
low
Source
semi-synthetic
beautyskincarebrightening
Read ingredient reviewSkin lightening agent
Capryloyl Benzothiazine Carboxylic Acid
CAPRYLYLOXYPHENYLAMINO DIMETHYLTETRAHYDRO BENZOTHIAZINE CARBOXYLIC ACID
3.5
A synthetic brightener that targets melanin production, but research is still emerging compared to more established options.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient review4.0
A gentle, fermented rice extract that hydrates and supports a brighter, more even skin tone without irritation.
Irritation
low
Source
natural
beautyskincarebrightening
Read ingredient review3.8
A synthetic brightening ingredient that works by slowing melanin production, but research is still emerging compared to more established alternatives.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient reviewBrightening agent
Hydroxypropyl Phenylhydrazinoyl T-Butylcarbamate
Hydroxypropyl Phenylhydrazinoyl T-Butylcarbamate
4.0
A synthetic ingredient that targets dark circles by reducing pigmentation and improving microcirculation, best for under-eye use.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient review3.8
Melozone is a gentle peptide-based brightener that may help fade dark spots over time, but clinical evidence is still limited compared to more established ingredients.
Irritation
low
Source
semi-synthetic
beautyskincarebrightening
Read ingredient review4.0
A niacinamide variant that may improve skin tone and circulation, but can cause temporary flushing in sensitive individuals.
Irritation
moderate
Source
semi-synthetic
beautyskincarebrightening
Read ingredient review4.0
A gentle, synthetic brightener that works by calming melanin production signals, making it a promising alternative to more aggressive lighteners.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient review4.0
A gentle exfoliating and brightening ingredient that pairs niacinamide with glycolic acid for smoother, more even-toned skin with less sting.
Irritation
low
Source
semi-synthetic
beautyskincareexfoliantbrightening
Read ingredient review4.0
A gentle, multitasking ingredient that pairs niacinamide’s brightening and barrier-supporting powers with mild exfoliating and soothing properties from hydroxybenzoate.
Irritation
low
Source
semi-synthetic
beautyskincarebrighteningantioxidant
Read ingredient review4.3
A well-tolerated alternative to azelaic acid that helps fade dark spots, calm redness, and refine pores without irritation.
Irritation
low
Source
semi-synthetic
beautyskincarebrighteningsoothing
Read ingredient reviewSkin brightening agent
THPE Dioxothiomorpholinomethyl Phenylindole
TETRAHYDROPYRANYLMETHYLAMINO DIOXOTHIOMORPHOLINOMETHYL PHENYLINDOLE
3.5
A novel synthetic ingredient with limited public research; early data suggests it may help even skin tone, but its safety and efficacy are not yet well-established.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient review4.0
A gentle, non-irritating brightener that targets dark spots by calming the signal that triggers excess pigment production.
Irritation
low
Source
synthetic
beautyskincarebrightening
Read ingredient review