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

Anti-aging agent

Palmitoyl Octapeptide-24

Palmitoyl Octapeptide-24

4.0

A synthetic peptide that may help smooth fine lines and improve skin firmness, but more independent research is needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Octapeptide-26

Palmitoyl Octapeptide-26

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more human studies are needed to confirm its effectiveness.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Octapeptide-27 Amide

Palmitoyl Octapeptide-27 Amide

4.2

A synthetic peptide that may help improve skin firmness and reduce fine lines by supporting collagen-related signaling, but research is still emerging.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Oligopeptide-135

Palmitoyl Oligopeptide-135

4.0

A synthetic peptide that may help improve skin firmness and smooth fine lines, but individual results vary and more research is needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Oligopeptide-70

Palmitoyl Oligopeptide-70

4.0

A synthetic peptide that may help firm skin and soften wrinkles, but research is still emerging compared to more established peptides.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Oligopeptide-78

Palmitoyl Oligopeptide-78

4.0

A lab-made 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

Antioxidant

Palmitoyl Olive Leaf Extract

Palmitoyl Olive Leaf Extract

4.0

A gentle, antioxidant-rich ingredient that helps firm and protect skin, with good compatibility for most skin types.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Soothing agent

Palmitoyl PEA Amino Acids

Palmitoyl PEA Amino Acids

4.0

A gentle, peptide-like ingredient that helps calm skin and reduce the look of redness without irritation.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Anti-Aging Agent

Palmitoyl Pentapeptide-38

Palmitoyl Pentapeptide-38

4.3

A well-studied peptide that helps reduce fine lines and improve skin firmness by boosting collagen production.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Pentapeptide-4

PALMITOYL SH-PENTAPEPTIDE-4

4.3

A well-studied peptide that can help reduce fine lines and improve skin firmness with consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Pentapeptide-5

Palmitoyl Pentapeptide-5

4.2

A well-studied peptide that may help reduce fine lines and support firmer-looking skin with consistent use.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Antioxidant

Palmitoyl Pine Bark Extract

Palmitoyl Pine Bark Extract

4.0

A gentle, antioxidant-rich ingredient that may help firm skin and reduce fine lines, but human studies are limited.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Soothing Agent

Palmitoyl Potentilla Root Extract

Palmitoyl Potentilla Erecta Root Extract

3.8

A gentle, semi-synthetic ingredient that combines the soothing power of tormentil root with enhanced skin compatibility.

Irritation

low

Source

semi-synthetic

beautyskincaresoothing agent
Read ingredient review

Anti-aging agent

Palmitoyl Proline

Palmitoyl Proline

4.0

Palmitoyl Proline is a synthetic peptide that may help support collagen production and improve skin firmness, but more human studies are needed to confirm its standalone effects.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Skin conditioning agent

Palmitoyl Quinoa Amino Acids

Palmitoyl Quinoa Amino Acids

4.0

A gentle, plant-based peptide that may help support skin firmness and reduce the look of fine lines.

Irritation

low

Source

semi-synthetic

beautyskincareanti-aging
Read ingredient review

Antioxidant

Palmitoyl Rhubarb Root Extract

Palmitoyl Rheum Rhaponticum Root Extract

3.8

A gentle, semi-synthetic antioxidant that may help calm skin and fight free radicals, but research is still early.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidant
Read ingredient review

Skin conditioning agent

Palmitoyl Serine/Silk Amino Acids Methyl Esters

Palmitoyl Serine/Silk Amino Acids Methyl Esters

4.0

A gentle conditioning ingredient that may help support skin barrier function and improve texture, but research is limited compared to more established peptides.

Irritation

low

Source

semi-synthetic

beautyskincareconditioning agent
Read ingredient review

Anti-aging agent

Palmitoyl SH-Octapeptide-24 Amide

PALMITOYL SH-OCTAPEPTIDE-24 AMIDE

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 SH-Oligopeptide-79

Palmitoyl SH-Oligopeptide-79

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more independent research is needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging

Palmitoyl SH-Tripeptide-1 Amide

PALMITOYL SH-TRIPEPTIDE-1 AMIDE

4.0

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

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-Aging Agent

Palmitoyl SH-Tripeptide-2 Amide

Palmitoyl SH-Tripeptide-2 Amide

4.0

A synthetic peptide that may help reduce fine lines and improve skin firmness, but results vary and more human studies are needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl SH-Tripeptide-3 Amide

Palmitoyl SH-Tripeptide-3 Amide

4.3

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

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl SH-Tripeptide-4 Amide

Palmitoyl SH-Tripeptide-4 Amide

4.0

A synthetic peptide that may help support collagen and improve skin firmness, but more human studies are needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Hair Conditioning Agent

Palmitoyl Silk Amino Acids

Palmitoyl Silk Amino Acids

4.0

A gentle, silk-derived conditioning agent that helps smooth hair and soften skin without heavy buildup.

Irritation

low

Source

semi-synthetic

beautyskincarehaircare
Read ingredient review

Anti-Aging Agent

Palmitoyl Snail Oligopeptide-1

Palmitoyl Lysyl S-Snail Oligopeptide-1 Amide Acetate

4.0

A lab-made peptide that mimics snail proteins to help skin look firmer and smoother, but it's not a proven alternative to retinol or collagen injections.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tetrapeptide-10

Palmitoyl Tetrapeptide-10

4.0

A gentle peptide that may help soften fine lines by encouraging collagen production, but results are subtle and take time.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Tetrapeptide-12

Palmitoyl Tetrapeptide-12

4.0

A gentle synthetic peptide that may help soften fine lines by signaling skin to produce more collagen, but results are subtle and require consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tetrapeptide-20

Palmitoyl Tetrapeptide-20

4.0

A gentle peptide that may help improve skin firmness and soften fine lines with consistent use.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Tetrapeptide-50

Palmitoyl Tetrapeptide-50

4.0

A synthetic peptide that may help improve skin firmness and reduce fine lines, but more independent human studies are needed.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tetrapeptide-7

Palmitoyl Tetrapeptide-7

4.3

A well-studied peptide that helps calm skin and support collagen production, making it a gentle anti-aging workhorse.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-1

Palmitoyl Tripeptide-1

4.3

A well-studied peptide that helps reduce fine lines by encouraging collagen production, but results are gradual and not dramatic.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-28

Palmitoyl Tripeptide-28

4.0

A signaling peptide that encourages your skin to act younger by boosting collagen, but results are gradual and subtle.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-29

Palmitoyl Tripeptide-29

4.2

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

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-31

Palmitoyl Tripeptide-31

4.0

A gentle peptide that may help improve skin firmness and reduce fine lines with consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-36

Palmitoyl Tripeptide-36

4.0

A synthetic peptide that encourages collagen production, helping reduce fine lines and improve skin firmness with minimal irritation.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-37

Palmitoyl Tripeptide-37

4.0

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

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Tripeptide-38

Palmitoyl Tripeptide-38

4.3

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

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Tripeptide-4

Palmitoyl Tripeptide-4

4.3

Palmitoyl Tripeptide-4 is a well-studied peptide that helps reduce fine lines and improve skin firmness by encouraging collagen production.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Anti-Aging Agent

Palmitoyl Tripeptide-40

Palmitoyl Tripeptide-40

4.0

A synthetic peptide that encourages firmer, smoother skin by supporting collagen-building signals.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-42

Palmitoyl Tripeptide-42

4.2

A synthetic peptide that mimics natural signals to help skin look firmer and smoother over time.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-5

Palmitoyl Tripeptide-5

4.3

A well-tolerated peptide that may help reduce fine lines and improve skin firmness by encouraging collagen production.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-5 Nonapeptide-1 Complex

Palmitoyl SH-Tripeptide-5 Norisoleucyl SH-Nonapeptide-1

4.2

A synthetic peptide blend that may help soften fine lines and improve skin firmness with regular use, though results are gradual and not dramatic.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging

Palmitoyl Tripeptide-5 with Vitamin C

Palmitoyl Tripeptide-5 Amidopropyl Ascorbyl Phosphate HCl

4.0

A clever combo ingredient that pairs a collagen-boosting peptide with a stable form of vitamin C for dual anti-aging and antioxidant benefits.

Irritation

low

Source

semi-synthetic

beautyskincareantioxidantpeptide
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-52 Amide

Palmitoyl Tripeptide-52 Amide

4.0

A synthetic peptide that signals skin to produce more collagen, helping to smooth wrinkles and improve firmness with consistent use.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-53 Amide

Palmitoyl Tripeptide-53 Amide

4.0

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

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-Aging Agent

Palmitoyl Tripeptide-54 Amide

Palmitoyl Tripeptide-54 Amide

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

beautyskincarepeptide
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-56

Palmitoyl Tripeptide-56

4.0

A promising synthetic peptide that may help firm skin and soften lines, though research is still emerging.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Anti-aging agent

Palmitoyl Tripeptide-7

PALMITOYL TRIPEPTIDE-7 HCL

4.3

A well-tolerated peptide that helps reduce fine lines and support skin firmness by encouraging collagen production.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Soothing agent

Palmitoyl Tripeptide-8

Palmitoyl Tripeptide-8

4.0

A synthetic peptide that helps calm visible skin reactivity and supports a more resilient-looking complexion over time.

Irritation

low

Source

synthetic

beautyskincarepeptide
Read ingredient review

Skin conditioning agent

Palmitoyl Tryptamine

Palmitoyl Tryptamine

3.5

Palmitoyl Tryptamine is a synthetic peptide-like compound that may help support skin firmness and reduce fine lines, but research is still emerging and it is less common than more established peptides.

Irritation

low

Source

synthetic

beautyskincareanti-aging
Read ingredient review

Antioxidant

Palo Santo Extract

BULNESIA SARMIENTOI EXTRACT

3.8

A fragrant botanical extract with antioxidant potential, but limited research on its specific cosmetic benefits.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Palo Santo Wood Extract

Eysenhardtia polystachya wood extract

3.8

A gentle, antioxidant-rich botanical extract that may help calm skin and fight environmental stress, though research is still emerging.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review

Antioxidant

Panax Notoginseng Root Powder

PANAX NOTOGINSENG ROOT POWDER

4.0

A gentle botanical powder that may help calm redness and defend against environmental stress, but its benefits are not as well-studied as some other plant extracts.

Irritation

low

Source

natural

beautyskincarebotanical
Read ingredient review

Exfoliant

Pancreatin

PANCREATIN

3.5

Pancreatin is a gentle enzyme exfoliant that helps soften and smooth skin by breaking down dead skin cells, but it's less common and less studied than other exfoliating enzymes.

Irritation

low

Source

natural

beautyskincareexfoliant
Read ingredient review

Antioxidant

Pandan Bract Extract

Pandanus Odoratissimus Bract Extract

3.8

Pandan bract extract is a gentle, fragrant botanical with antioxidant potential, but research on its skincare benefits is still limited.

Irritation

low

Source

natural

beautyskincareantioxidant
Read ingredient review