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

Emollient

Palmitic Acid

Palmitic Acid

4.0

Palmitic acid is a gentle fatty acid that softens skin and helps products feel creamy, but it may clog pores for some people.

Irritation

low

Source

natural

beautyskincareemollient
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Emollient

Palmitoleic Acid

HEXADECENOIC ACID

4.0

A gentle omega-7 fatty acid that helps support the skin barrier and improve moisture retention without clogging pores.

Irritation

low

Source

natural

beautyskincareemollient
Read ingredient review

Skin conditioning agent

Palmitoyl Alanine

Palmitoyl Alanine

4.0

A gentle, synthetic amino acid derivative that helps support the skin barrier and improve moisture retention without irritation.

Irritation

low

Source

synthetic

beautyskincareconditioning agent
Read ingredient review

Skin conditioning agent

Palmitoyl Arginine

Palmitoyl Arginine

4.0

A gentle peptide that signals skin to support collagen, helping improve firmness and smooth fine lines over time.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Skin conditioning agent

Palmitoyl Carnitine

Palmitoyl Carnitine

3.8

Palmitoyl Carnitine is a gentle, fatty-acid-linked amino acid that may help soothe skin and support a healthy moisture barrier, though research is still early.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Anti-aging agent

Palmitoyl Carnosine

Palmitoyl Carnosine

4.0

A peptide that helps protect collagen from sugar damage and supports firmer, more resilient skin over time.

Irritation

low

Source

semi-synthetic

beautyskincarepeptide
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Antioxidant

Palmitoyl Cocoa Seed Extract

Palmitoyl Cocoa Seed Extract

3.8

A gentle, semi-synthetic antioxidant that may help protect skin from environmental stress, but research is still early.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
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Antioxidant

Palmitoyl Coffee Bean Extract

Palmitoyl Coffee Bean Extract

4.0

A promising antioxidant ingredient that pairs coffee's polyphenols with a fatty acid for better skin penetration, though research is still limited.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Skin conditioning agent

Palmitoyl Collagen Amino Acids

Palmitoyl Collagen Amino Acids

4.0

A gentle, fatty-acid-linked collagen peptide that may help improve skin firmness and hydration with low irritation risk.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Decapeptide-21

Palmitoyl Decapeptide-21

4.0

A synthetic peptide that signals skin to produce more collagen, helping reduce fine lines and improve firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Dipeptide-10

Palmitoyl Dipeptide-10

4.0

A synthetic peptide that may help reduce fine lines and improve skin firmness, but results are gradual and vary by person.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Dipeptide-13

Palmitoyl Dipeptide-13

4.0

A synthetic peptide that signals skin to produce more collagen, helping soften fine lines over time with minimal irritation.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Dipeptide-17

Palmitoyl Dipeptide-17

4.0

A synthetic peptide that may help reduce the look of fine lines and improve skin firmness with regular use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Dipeptide-18

Palmitoyl Dipeptide-18

4.0

A synthetic peptide that signals skin to produce more collagen, helping reduce fine lines and improve firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Dipeptide-28 Complex

Palmitoyl Dipeptide-28 D-Serine Dipeptide-7 Palmitamide

4.0

A synthetic peptide complex that may help improve skin firmness and reduce fine lines, with low irritation potential.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Dipeptide-7

Palmitoyl Dipeptide-7

4.0

A synthetic peptide that helps support collagen production and reduce the appearance of fine lines with low irritation risk.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Surfactant

Palmitoyl Glutamic Acid

Palmitoyl Glutamic Acid

4.0

A mild, amino-acid-based surfactant that cleanses without stripping the skin’s natural moisture barrier.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing agent
Read ingredient review

Surfactant

Palmitoyl Glycine

Palmitoyl Glycine

4.0

Palmitoyl Glycine is a mild, amino-acid-based surfactant that cleanses without stripping the skin, making it a great choice for sensitive or dry skin types.

Irritation

low

Source

semi-synthetic

beautyskincarecleansing
Read ingredient review

Anti-aging agent

Palmitoyl Glycitein

Palmitoyl Glycitein

4.0

A gentle, peptide-inspired ingredient that helps improve skin firmness and smoothness without irritation.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Skin conditioning agent

Palmitoyl Gold of Pleasure Amino Acids

Palmitoyl Gold of Pleasure Amino Acids

4.0

A gentle, barrier-friendly ingredient that combines fatty acids with plant amino acids to help skin feel smooth and hydrated.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Antioxidant

Palmitoyl Grape Seed Extract

Palmitoyl Grape Seed Extract

4.0

A stabilized antioxidant ingredient that helps protect skin from environmental stress and supports a more even-looking complexion.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Antioxidant

Palmitoyl Green Tea Extract

PALMITOYL CAMELLIA SINENSIS EXTRACT

4.0

A stabilized, oil-friendly version of green tea extract that brings antioxidant and soothing power to formulas without the instability of plain green tea.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Anti-aging agent

Palmitoyl Heptapeptide-18

PALMITOYL HEPTAPEPTIDE-18

4.0

A synthetic peptide that may help soften fine lines and improve skin firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Heptapeptide-27

Palmitoyl Heptapeptide-27

4.0

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

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-Aging Agent

Palmitoyl Heptapeptide-5

Palmitoyl Heptapeptide-5

4.2

A synthetic peptide that mimics natural skin signals to help firm and smooth wrinkles with a low risk of irritation.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging

Palmitoyl Hexapeptide-12

Palmitoyl Hexapeptide-12

4.0

A synthetic peptide that may help soften the look of expression lines and support firmer-looking skin over time.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-14

Palmitoyl Hexapeptide-14

4.0

A synthetic peptide that may help support collagen and improve skin firmness, but research is still emerging.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-15

Palmitoyl Hexapeptide-15

4.2

A lab-made peptide that signals skin to appear firmer and smoother, with low irritation potential.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-19

Palmitoyl Hexapeptide-19

4.2

A well-studied peptide that signals skin to produce more collagen, helping soften fine lines over time.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-26

Palmitoyl Hexapeptide-26

4.0

A synthetic peptide that may help soften fine lines and improve skin firmness, but results are subtle and require consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-27 Acetate

Palmitoyl Hexapeptide-27 Acetate

4.0

A synthetic peptide that may help smooth wrinkles and improve skin firmness, with good tolerability for most skin types.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-32

Palmitoyl Hexapeptide-32

4.3

A well-studied peptide that helps reduce fine lines and improve skin firmness with minimal irritation.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-36

Palmitoyl Hexapeptide-36

4.0

A well-studied peptide that may help soften expression lines and improve skin firmness with consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-52

Palmitoyl Hexapeptide-52

4.0

A synthetic peptide that may help support collagen and improve skin firmness with low irritation risk.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-55

HEXAPEPTIDE-55 PALMITATE

4.0

A synthetic peptide designed to support collagen and improve skin firmness with low irritation risk.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Hexapeptide-56

Palmitoyl Hexapeptide-56

4.0

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

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Humectant

Palmitoyl Hyaluronate

Palmitoyl Hyaluronate

4.2

A lipid-modified hyaluronic acid that may cling to skin longer than standard hyaluronic acid, offering targeted hydration.

Irritation

low

Source

semi-synthetic

beautyskincarehumectant
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Skin conditioning agent

Palmitoyl Hydrolyzed Collagen

Palmitoyl Hydrolyzed Collagen

4.0

A modified collagen peptide that may help support skin firmness and hydration with low irritation risk.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Emulsifier

Palmitoyl Inulin

Palmitoyl Inulin

4.0

A gentle, plant-based emulsifier that helps create stable, creamy textures without common irritation concerns.

Irritation

low

Source

semi-synthetic

beautyskincareemulsifier
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Soothing agent

Palmitoyl Isoleucine

Palmitoyl Isoleucine

4.0

A gentle, synthetic peptide-like ingredient that helps calm skin reactivity and support a more even-looking complexion.

Irritation

low

Source

synthetic

beautyskincaresoothing agent
Read ingredient review

Hair Conditioning Agent

Palmitoyl Keratin Amino Acids

Palmitoyl Keratin Amino Acids

4.0

A gentle conditioning ingredient that helps strengthen hair and soften skin by delivering keratin amino acids with a fatty acid anchor.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Skin conditioning agent

Palmitoyl Mare Milk

Palmitoyl Mare Milk

3.5

A gentle, lipid-enriched mare milk derivative that may help moisturize and condition skin, but research is limited.

Irritation

low

Source

natural

beautyskincareconditioning agent
Read ingredient review

Soothing agent

Palmitoyl Methoxytryptamine

Palmitoyl Methoxytryptamine

3.8

A gentle, melatonin-inspired ingredient that may help calm skin and support overnight repair, but research is still early.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Skin conditioning agent

Palmitoyl Millet Amino Acids

Palmitoyl Millet Amino Acids

4.0

A gentle, plant-based conditioning ingredient that helps soften and smooth skin without irritation.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Skin Conditioning Agent

Palmitoyl Myristyl Serinate

Palmitoyl Myristyl Serinate

4.0

A gentle, amino-acid-based ingredient that helps condition skin and stabilize formulas without common irritation.

Irritation

low

Source

synthetic

beautyskincareemulsifier
Read ingredient review

Anti-aging agent

Palmitoyl Nonapeptide-6

Palmitoyl Nonapeptide-6

4.0

A synthetic peptide that mimics natural signals to encourage firmer, smoother-looking skin over time.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Conditioning agent

Palmitoyl Oat Amino Acids

Palmitoyl Oat Amino Acids

4.2

A mild, oat-derived conditioning ingredient that leaves skin and hair feeling soft without heavy buildup.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review