Ingredient dictionary
Every cosmetic ingredient, in plain English
Function, who it suits, cautions and comedogenic rating for 119+ ingredients — no hype, no fear-mongering.
antioxidant
Potent antioxidant that neutralizes free radicals and may improve skin texture and radiance.
Coenzyme Q10Lipid-soluble antioxidant that protects skin from free radicals and supports cellular energy production.
Ethyl Ascorbic AcidStable vitamin C derivative that brightens skin, protects from oxidative stress, and supports collagen production.
Ferulic AcidPlant-derived antioxidant that stabilizes vitamin C and E while protecting skin from free radical damage.
GlutathioneA tripeptide antioxidant that neutralizes free radicals and may support skin brightening and detoxification.
Green Tea ExtractPolyphenol-rich plant extract that protects skin from oxidative stress and free radical damage.
PropolisResinous bee-derived substance rich in antioxidants and flavonoids that soothes and protects skin.
ResveratrolPolyphenol antioxidant from grapes and berries that protects skin from free radical damage and supports collagen.
TocopherolFat-soluble vitamin that neutralizes free radicals and protects skin from oxidative stress.
Vitamin EFat-soluble antioxidant that protects skin from free-radical damage and supports barrier function.
antioxidant, brightening agent, vitamin
antioxidant, vitamin, brightening agent
brightening agent
A plant-derived tyrosinase inhibitor that gradually fades dark spots and hyperpigmentation.
ArbutinPlant-derived hydroquinone precursor that gradually converts to hydroquinone to reduce dark spots and even skin tone.
HydroquinonePotent tyrosinase inhibitor that reduces melanin production to fade dark spots and hyperpigmentation.
Kojic AcidA fungal-derived ingredient that inhibits tyrosinase to reduce dark spots and uneven skin tone.
Licorice Root ExtractPlant extract that soothes irritation, reduces redness, and evens skin tone with anti-inflammatory compounds.
Tranexamic AcidSynthetic amino acid that reduces melanin production and inflammation to even skin tone and fade hyperpigmentation.
emollient
Lipid molecules that strengthen skin barrier and lock in moisture for hydrated, resilient skin.
CholesterolLipid that strengthens skin barrier and improves hydration retention in formulas.
Fatty AcidsLong-chain organic molecules that nourish, soften skin and strengthen the natural moisture barrier.
Grapeseed OilLightweight plant oil that moisturizes and softens skin without heavy residue.
SqualeneA naturally occurring lipid that mimics skin's own oils, providing deep hydration and barrier support.
emollient, occlusive
A waxy fatty alcohol that thickens, emulsifies, and softens skin while reducing water loss.
Cetyl AlcoholFatty alcohol that thickens, stabilizes emulsions, and softens skin without clogging pores.
LanolinWaxy sheep's wool byproduct that deeply moisturizes and forms a protective barrier on skin.
Shea ButterRich plant butter that softens skin and locks in moisture with fatty acids and vitamins.
SiliconesSynthetic polymer that smooths skin/hair, creates a breathable barrier, and improves texture without greasy feel.
SqualaneLightweight, non-greasy hydrocarbon oil that mimics skin's natural sebum to soften and protect.
Stearyl AlcoholA waxy fatty alcohol that softens skin and thickens formulas into creams and balms.
emollient, occlusive, oil/butter
emollient, oil/butter
exfoliant (AHA/BHA/PHA)
Water-soluble exfoliant that dissolves dead skin cells to reveal smoother, brighter skin.
Azelaic AcidA dicarboxylic acid that exfoliates, reduces redness, and targets acne and rosacea.
Beta Hydroxy Acid (BHA)Oil-soluble exfoliant that penetrates pores to dissolve dead skin and reduce congestion.
Citric AcidWeak organic acid that gently exfoliates and adjusts pH in skincare formulas.
GluconolactoneA gentle polyhydroxy acid (PHA) that exfoliates and hydrates without high irritation risk.
Glycolic AcidWater-soluble AHA that exfoliates dead skin cells to improve texture and radiance.
Lactic AcidA gentle alpha-hydroxy acid that exfoliates dead skin and improves texture via chemical peeling.
Lactobionic AcidA gentle polyhydroxy acid (PHA) that exfoliates and hydrates without excessive irritation.
Mandelic AcidGentle AHA exfoliant derived from almonds that dissolves dead skin without harsh irritation.
Polyhydroxy Acids (PHAs)Gentle chemical exfoliants with larger molecular size that exfoliate while reducing irritation compared to AHAs.
Salicylic AcidOil-soluble exfoliant that penetrates pores to remove dead skin and unclog sebaceous buildup.
fragrance
humectant
Natural amino acid derivative that draws moisture into skin and supports hydration.
GlycerinA humectant that draws moisture into skin, improving hydration and barrier function.
Hyaluronic AcidHumectant that binds water to skin, plumping and hydrating for a smoother appearance.
PanthenolProvitamin B5 that hydrates skin and supports barrier repair with soothing properties.
Polyglutamic acidA fermented amino acid polymer that holds moisture in skin, delivering hydration similar to hyaluronic acid.
Snail MucinSnail secretion extract that hydrates and supports skin barrier repair with glycoproteins and hyaluronic acid.
Sodium HyaluronateA salt form of hyaluronic acid that draws moisture into skin and holds up to 1000x its weight in water.
Sodium PCANatural amino acid derivative that draws moisture into skin and supports its natural hydration barrier.
TrehaloseA natural disaccharide sugar that hydrates skin and protects proteins from stress damage.
UreaA humectant that draws moisture into skin and gently exfoliates via keratin breakdown.
occlusive
oil/butter
Lightweight oil rich in fatty acids and vitamin E that nourishes and softens skin without heavy residue.
Marula OilFast-absorbing African oil rich in antioxidants and fatty acids that softens skin without heaviness.
Rosehip OilCold-pressed seed oil rich in vitamins A, C, and essential fatty acids that nourishes and supports skin renewal.
other
Building blocks of proteins that hydrate, strengthen skin barrier, and support collagen structure.
BentoniteAbsorbent clay mineral that draws out impurities and oil from skin.
Benzoyl PeroxideAntimicrobial and keratolytic agent that kills acne-causing bacteria and promotes skin cell turnover.
CaffeineStimulating alkaloid that reduces puffiness, improves circulation, and provides antioxidant benefits to skin.
Charcoal (Activated Charcoal)Porous carbon that absorbs oils, impurities, and toxins from skin surface.
CollagenProtein-derived ingredient that hydrates and provides film-forming properties to skin.
DMAE (Dimethylaminoethanol)A skin-firming ingredient claimed to support collagen and reduce fine lines through membrane stabilization.
GlycolipidsLipids with attached sugar molecules that support skin barrier integrity and cellular communication.
Hydrolyzed CollagenBroken-down collagen protein that hydrates and may support skin firmness and elasticity.
Iron OxidesMineral colorants derived from iron that provide stable, long-lasting color to cosmetics.
KaolinAbsorbent clay mineral that removes excess oil and impurities from skin surface.
MicaNatural mineral that adds shimmer, light-diffusing properties, and texture to color cosmetics and skincare.
PhytosphingosineA ceramide precursor that strengthens skin barrier function and improves moisture retention.
SulfurAntimicrobial mineral that reduces bacteria and sebum production, traditionally used for acne and rosacea.
TalcFinely milled mineral powder that absorbs moisture and provides smoothness and mattifying finish.
peptide
Synthetic peptide that mimics botulinum toxin's mechanism to reduce dynamic wrinkles and expression lines.
Copper PeptidesCopper-binding peptides that support collagen production and skin repair processes.
MatrixylSynthetic peptide that signals skin to boost collagen and elastin production for firmer appearance.
PeptidesShort chains of amino acids that support skin firmness, elasticity, and collagen production.
preservative
Organic solvent and mild preservative that dissolves fragrance & actives while inhibiting microbial growth.
EthylhexylglycerinLightweight humectant-preservative hybrid that draws moisture to skin while providing mild antimicrobial benefits.
ParabensAntimicrobial compounds that prevent bacterial and fungal growth in cosmetics and skincare products.
PhenoxyethanolBroad-spectrum preservative that prevents bacterial and fungal growth in cosmetic formulas.
retinoid
Synthetic retinoid that normalizes skin cell turnover and reduces acne and signs of aging.
BakuchiolPlant-derived retinol alternative that supports skin renewal without retinoid irritation or sun sensitivity.
RetinaldehydeA bioactive form of vitamin A that converts to retinoic acid, promoting cell turnover and collagen production.
RetinolVitamin A derivative that promotes cell turnover and collagen production for firmer, clearer skin.
Retinyl PalmitateA stable, plant-derived form of vitamin A that converts to retinol to support skin cell turnover and collagen production.
TretinoinPrescription vitamin A metabolite that increases cell turnover and collagen production for anti-aging and acne.
Vitamin AFat-soluble vitamin that boosts cell turnover and collagen production for smoother, firmer skin.
soothing agent
A naturally-derived compound that soothes irritation and promotes skin healing and cell turnover.
Aloe VeraSucculent plant extract with hydrating and calming properties for irritated or inflamed skin.
Beta GlucanPolysaccharide from yeast or fungi that hydrates, soothes inflammation, and supports skin barrier function.
Centella Asiatica ExtractTraditional plant extract known for soothing irritation, supporting skin barrier function, and promoting healing.
Colloidal OatmealFinely ground oat particles that soothe irritation, reduce inflammation, and provide gentle exfoliation.
EctoinNaturally derived amino acid that stabilizes skin proteins and reduces irritation and redness.
Madecassic AcidA triterpene compound from centella asiatica that reduces inflammation and supports skin barrier repair.
MadecassosideA triterpenoid compound from Centella asiatica that reduces inflammation and strengthens skin barrier function.
Tea Tree OilEssential oil from Australian tea tree with antimicrobial and anti-inflammatory properties for acne-prone skin.
Witch HazelPlant extract from witch hazel shrub with astringent and anti-inflammatory properties used to tone and calm skin.
sunscreen filter
Broad-spectrum UVA sunscreen filter that absorbs UV rays across the entire UVA spectrum.
HomosalateUVB sunscreen filter that absorbs ultraviolet radiation to protect skin from sun damage.
Mexoryl (Avobenzone)Broad-spectrum UVA sunscreen filter that absorbs long-wave UVA rays to prevent sun damage.
OctinoxateUVB-absorbing chemical sunscreen filter that converts sun rays into heat.
OctocryleneUV-absorbing sunscreen ingredient that protects against UVB and short-wave UVA rays.
OxybenzoneChemical UVA/UVB sunscreen filter that absorbs UV radiation and converts it to heat.
Tinosorb M or Tinosorb SPhotostable broad-spectrum UV filter that absorbs and scatters UVA/UVB rays without degrading in sunlight.
Titanium DioxideMineral UV blocker that reflects/scatters UVA and UVB rays to protect skin from sun damage.
Zinc OxidePhysical sunscreen that reflects and scatters UV rays; provides broad-spectrum UVA/UVB protection.
surfactant
Mild coconut-derived cleanser that removes oils and dirt while being gentler than sulfates.
Sodium Laureth SulfateMild cleansing agent that removes oil and dirt; gentler than SLS due to ethoxylation.
Sodium Lauryl SulfateStrong anionic surfactant that cleanses by removing oils and dirt from skin and hair.
vitamin
Stable, water-soluble vitamin C derivative that converts to active ascorbic acid in skin.
Magnesium Ascorbyl PhosphateStabilized vitamin C derivative that brightens skin and supports collagen without the instability of pure ascorbic acid.
NiacinamideWater-soluble B vitamin that strengthens skin barrier, reduces pore appearance, and calms inflammation.
Sodium Ascorbyl PhosphateStable vitamin C derivative that converts to ascorbic acid on skin; brightens, antioxidant, supports collagen.
Tetrahexyldecyl AscorbateOil-soluble vitamin C derivative that brightens and protects skin with improved stability versus L-ascorbic acid.
Vitamin B5 (Panthenol)Hydrating humectant that draws water into skin and supports moisture barrier function.
