Beauty 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 60 of 20,769
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

Antioxidant

Safflower Sprout Extract

Carthamus Tinctorius Sprout Extract

4.0

A gentle, plant-based antioxidant that may help calm and protect skin, though research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Surfactant

Saffloweroyl Cysteine

SAFFLOWEROYL CYSTEINE

4.0

A mild, amino-acid-based cleanser that gently removes dirt without stripping the skin barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
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Antioxidant

Saffron Callus Extract

Crocus Sativus Callus Extract

4.0

A gentle, antioxidant-rich extract from saffron that may help calm skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Saffron Flower Extract

Crocus Sativus Flower Extract

4.0

A gentle, antioxidant-rich botanical extract that may help brighten skin and fight free radical damage, but its high cost and limited clinical data mean it's often used more for marketing than proven results.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Saffron Leaf Cell Culture Extract

Crocus Sativus Leaf Cell Culture Extract

4.0

A gentle, lab-grown saffron extract that may help protect skin from environmental stress and calm irritation, though research is still early.

Irritation

low

Source

biotech

beautyskincareantioxidant
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Antioxidant

Saffron Meristem Cell Extract

Crocus Sativus Meristem Cell Extract

4.0

A gentle plant stem cell extract that may help protect skin from environmental stress and support a more even tone.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Saffron Style Extract

Crocus Sativus Style Extract

4.0

A gentle, antioxidant-rich extract from saffron that may help brighten skin and protect against environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sage Extract

Salvia Officinalis Flower/Leaf/Stem Extract

4.0

Sage extract offers antioxidant and soothing benefits, but its astringent properties may be drying for some skin types.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Sage Flower/Leaf/Stem Water

Salvia Officinalis Flower/Leaf/Stem Water

3.8

A mild, aromatic water that can soothe skin and provide antioxidant benefits, but is not a powerhouse active ingredient.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Sage Juice

Salvia Officinalis Flower/Leaf/Stem Juice

3.8

Sage juice is a gentle, antioxidant-rich water extract that can help soothe and protect skin, but it is not a powerhouse active and may cause sensitivity in rare cases.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sage Leaf Extract

Salvia Officinalis Leaf Extract

4.0

Sage leaf extract offers antioxidant protection and mild soothing benefits, but its astringent properties may be drying for some skin types.

Irritation

low

Source

natural

beautyskincareantioxidant
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Astringent

Sage Leaf Water

Salvia Officinalis Leaf Water

3.8

Sage Leaf Water offers gentle astringency and antioxidant benefits, making it a nice addition to toners and mists for normal to oily skin, but it's not a powerhouse active.

Irritation

low

Source

natural

beautyskincarebotanical
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Antioxidant

Sage Root Extract

Salvia Officinalis Root Extract

3.8

Sage root extract is a gentle antioxidant that may help calm skin and protect against environmental stress, but research is still early.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sagebrush Extract

Artemisia Tridentata Extract

3.8

Sagebrush extract is a gentle botanical with antioxidant potential, but research on its skincare benefits is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Fragrance

Sagebrush Leaf/Stem Oil

ARTEMISIA TRIDENTATA LEAF/STEM OIL

3.5

A fragrant botanical oil with traditional uses, but limited modern research on its specific skincare benefits and a moderate risk of skin irritation.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Sageretia Extract

Sageretia Theezans Branch/Leaf Extract

3.5

A gentle botanical extract with antioxidant potential, but research on its specific benefits for skin is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Sageretia Thea Leaf Extract

Sageretia Thea Leaf Extract

3.8

A gentle plant extract with antioxidant potential, but research is limited and benefits are not yet proven in human skin.

Irritation

low

Source

natural

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Texturizer

Sago Palm Leaf Powder

Cycas Revoluta Leaf Powder

3.5

A plant-based powder that may offer gentle exfoliation and antioxidant benefits, but its use in skincare is still emerging and requires caution due to potential irritation.

Irritation

moderate

Source

natural

beautyskincarebotanical
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Humectant

Saguaro Flower Extract

Carnegiea Gigantea Flower Extract

3.8

A gentle, plant-based extract that adds hydration and antioxidant protection, but research on its specific benefits is still limited.

Irritation

low

Source

natural

beautyskincarehumectantantioxidant
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Humectant

Sahel Scenedesmus Extract

Scenedesmus Extract

4.0

A gentle, hydrating microalgae extract with antioxidant potential, best for soothing and moisturizing sensitive skin.

Irritation

low

Source

natural

beautyskincareantioxidant
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Soothing Agent

Saisin Ekisu

Saisin Ekisu

3.5

Saisin Ekisu is a gentle botanical extract that may help calm skin and provide antioxidant support, but research is limited.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Soothing Agent

Sakhalin Fir Branch/Leaf Water

ABIES SACHALINENSIS BRANCH/LEAF WATER

3.8

A gentle, aromatic plant water that may offer mild soothing and antioxidant benefits, but research is limited.

Irritation

low

Source

natural

beautyskincaresoothing
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Antioxidant

Sakhalin Fir Leaf Extract

Abies sachalinensis leaf extract

4.0

A gentle, antioxidant-rich plant extract that helps protect skin from environmental stress and may calm irritation.

Irritation

low

Source

natural

beautyskincareantioxidant
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Fragrance

Sakhalin Fir Leaf Oil

ABIES SACHALINENSIS LEAF OIL

3.8

A fragrant essential oil from fir needles that adds a forest-like scent to products, but may irritate sensitive skin due to its aromatic compounds.

Irritation

moderate

Source

natural

beautyskincarefragrance
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Antioxidant

Sakhalin Raspberry Fruit Juice

RUBUS IDAEUS SACHALINENSIS FRUIT JUICE

3.8

A gentle, antioxidant-rich fruit juice from a wild raspberry that may help soothe and protect skin, but research is limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sakura Flower Extract

PRUNUS SPECIOSA (CHERRY) FLOWER EXTRACT

4.0

A mild, fragrant flower extract that may help calm skin and fight free radicals, but research is still limited.

Irritation

low

Source

natural

beautyskincarebotanical
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Exfoliant

Sakura Flower Powder

PRUNUS SPECIOSA (CHERRY) FLOWER POWDER

3.8

A gentle, natural exfoliant from cherry blossoms that can help smooth skin without harsh abrasion, but its benefits beyond texture are not well-studied.

Irritation

low

Source

natural

beautyskincareexfoliant
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Antioxidant

Salacia Reticulata Root Extract

Salacia Reticulata Root Extract

3.8

A gentle, antioxidant-rich root extract that may help protect skin from environmental stress, but research on its topical benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Salacia Reticulata Wood Extract

Salacia Reticulata Wood Extract

3.8

A gentle, antioxidant-rich wood extract that may help calm skin and protect against environmental stress, though human studies are limited.

Irritation

low

Source

natural

beautyskincareantioxidantsoothing
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Antioxidant

Salacia Root Extract

Salacia Madagascariensis Root Extract

3.8

A gentle plant extract with antioxidant potential, but research in cosmetics is still limited.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Antioxidant

Salad Burnet Extract

Sanguisorba Minor Extract

3.8

A gentle botanical extract with antioxidant and soothing potential, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Salcolin

Salcolin

3.5

Salcolin is a plant antioxidant with some soothing potential, but research is still early and it's not widely used in mainstream skincare.

Irritation

low

Source

natural

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Exfoliant

Salicin

Salicin

3.8

A gentle, plant-derived exfoliant that may help smooth skin and calm minor irritation, but it is less potent than salicylic acid.

Irritation

low

Source

natural

beautyskincareexfoliant
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Fragrance

Salicylaldehyde

Salicylaldehyde

3.5

Salicylaldehyde is a fragrant compound with mild antimicrobial properties, but it can be a skin sensitizer for some people.

Irritation

moderate

Source

synthetic

beautyskincarefragrance
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Exfoliant

Salicylamide

Salicylamide

3.5

Salicylamide is a gentler cousin of salicylic acid that may help exfoliate and calm skin, but research on its cosmetic benefits is still limited.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Salicylic Acid

Salicylic Acid

4.3

Salicylic acid is a well-studied BHA that exfoliates inside pores, making it a go-to for acne-prone and oily skin, but it can be drying if overused.

Irritation

moderate

Source

synthetic

beautyskincareexfoliant
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Exfoliant

Salicyloyl Beeswax

Salicyloyl Beeswax

3.8

A gentle exfoliating ingredient that combines the benefits of salicylic acid with the soothing properties of beeswax.

Irritation

low

Source

semi-synthetic

beautyskincareexfoliant
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Exfoliant

Salicyloyl Decapeptide-10

Salicyloyl Decapeptide-10

4.0

A gentle peptide-exfoliant hybrid that aims to smooth skin without the irritation of traditional salicylic acid.

Irritation

low

Source

semi-synthetic

beautyskincarepeptide
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Anti-aging agent

Salicyloyl Octapeptide-32

Salicyloyl Octapeptide-32

3.8

A synthetic peptide that may help support skin firmness and reduce fine lines, but more independent research is needed to confirm its effectiveness.

Irritation

low

Source

synthetic

beautyskincarepeptide
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Anti-aging agent

Salicyloyl Octapeptide-9

Salicyloyl Octapeptide-9

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but research is still emerging.

Irritation

low

Source

synthetic

beautyskincarepeptide
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Skin conditioning agent

Salicyloyl Oligopeptide-143

Salicyloyl Oligopeptide-143

3.8

A synthetic peptide that may help calm skin and support barrier repair, but research is still early.

Irritation

low

Source

synthetic

beautyskincarepeptide
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Barrier Repair

Salicyloyl Phytosphingosine

Salicyloyl Phytosphingosine

4.3

A gentle, multi-tasking lipid that helps repair the skin barrier while providing mild exfoliation—great for sensitive or acne-prone skin.

Irritation

low

Source

semi-synthetic

beautyskincarelipid
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Exfoliant

Salicyloylhydroxamic Acid

Salicyloylhydroxamic Acid

4.0

A gentle exfoliant that helps smooth skin and clear pores without the irritation often associated with salicylic acid.

Irritation

low

Source

synthetic

beautyskincareexfoliant
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Soothing agent

Salinicoccus Lysate Filtrate

Salinicoccus Lysate Filtrate

4.0

A gentle, biotech-derived ingredient that may help calm irritation and support a balanced skin microbiome, though research is still early.

Irritation

low

Source

biotech

beautyskincaresoothing agent
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Soothing agent

Salix Gracilistyla Leaf Extract

Salix Gracilistyla Leaf Extract

3.8

A gentle willow leaf extract that may help calm skin and provide antioxidant protection, though research is still emerging.

Irritation

low

Source

natural

beautyskincarebotanical extract
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Humectant

Salmon Egg Extract

Salmo Ovum Extract

3.8

Salmon egg extract is a gentle, nutrient-rich ingredient that helps hydrate and condition the skin, but research on its benefits is still emerging.

Irritation

low

Source

natural

beautyskincarehumectant
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Emollient

Salmon Oil

SALMON OIL

3.8

Salmon oil is a nourishing emollient that helps soften and soothe dry skin, but its fishy scent and moderate comedogenic risk may not suit everyone.

Irritation

low

Source

natural

beautyskincareemollient
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Anti-aging agent

Salmon Oligopeptide Complex

Methionyl R-Salmon Oligopeptide-1, Sh-Polypeptide-8

3.8

A salmon-derived peptide complex that may help support skin firmness and reduce signs of aging, but human research is still limited.

Irritation

low

Source

biotech

beautyskincarepeptide
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Anti-aging agent

Salmon Oligopeptide-1

R-Salmon Oligopeptide-1, Sh-Oligopeptide-1

3.8

A salmon-derived peptide that may help support skin firmness and elasticity, but research is still emerging and results vary.

Irritation

low

Source

natural

beautyskincarepeptide
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Soothing agent

Salnacidin

Salnacidin

3.5

Salnacidin is a novel peptide complex that may help calm sensitive skin and reinforce the skin barrier, but independent research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincarepeptide
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Soothing Agent

Salsola Komarovii Extract

Salsola Komarovii Extract

3.8

A gentle, plant-based extract that may help calm irritated skin and provide antioxidant support, though research is still limited.

Irritation

low

Source

natural

beautyskincaresoothing agent
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Exfoliant

Salt Mine Mud

Salt Mine Mud

3.8

A mineral-rich mud that can help absorb excess oil and gently exfoliate, but may be too abrasive for sensitive skin.

Irritation

moderate

Source

natural

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Antioxidant

Salvianolic Acid B

Salvianolic Acid B

4.0

A plant-derived antioxidant that helps calm skin and fight free radical damage, but research is still emerging for topical use.

Irritation

low

Source

natural

beautyskincareantioxidant
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Antioxidant

Sambucus Stem Extract

Sambucus Williamsii Stem Extract

3.8

A gentle plant extract with antioxidant potential, but research on its specific benefits for skin is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
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Humectant

Samphire Callus Extract

SALICORNIA HERBACEA CALLUS CULTURE EXTRACT

4.0

A gentle, biotech-grown extract from a salt-marsh plant that helps hydrate and calm the skin, with early research suggesting antioxidant benefits.

Irritation

low

Source

biotech

beautyskincarehumectantsoothing
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Humectant

Samphire Extract

Salicornia Bigelovii Extract

4.0

A gentle, hydrating plant extract from a salt-tolerant succulent, best for soothing and moisturizing normal to dry skin.

Irritation

low

Source

natural

beautyskincarehumectant
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