A gentle, fatty-acid-modified collagen that helps cleanse without stripping and leaves skin feeling soft.
Irritation
low
Source
semi-synthetic
Beauty ingredient research
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
A gentle, fatty-acid-modified collagen that helps cleanse without stripping and leaves skin feeling soft.
Irritation
low
Source
semi-synthetic
Skin conditioning agent
MYRISTOYL/PALMITOYL OXOSTEARAMIDE/ARACHAMIDE MEA
A synthetic conditioning ingredient that helps skin and hair feel smooth and hydrated, with a low risk of irritation.
Irritation
low
Source
synthetic
Conditioning Agent
MYRISTYLAMIDOPROPYL DIMETHYLAMINE DIMETHICONE PEG-7 PHOSPHATE
A gentle silicone-based conditioner that helps detangle hair and soften skin without heavy buildup.
Irritation
low
Source
semi-synthetic
A nutrient-dense ingredient that may support skin hydration and soothing, but human skincare research is still emerging.
Irritation
low
Source
natural
Nonfat dry milk extract is a gentle skin softener that provides light moisture and a soothing feel, but it offers limited active benefits compared to more concentrated dairy ingredients.
Irritation
low
Source
natural
Oat protein extract is a gentle, moisturizing ingredient that helps soothe and protect the skin barrier, making it ideal for sensitive or dry skin types.
Irritation
low
Source
natural
Hair Conditioning Agent
Oleamidopropyl Dimethylamine Hydrolyzed Collagen
A conditioning ingredient that adds slip and softness to hair and skin, but may be too heavy for oily or acne-prone skin.
Irritation
low
Source
semi-synthetic
Hair Conditioning Agent
OLEAMIDOPROPYLDIMONIUM HYDROXYPROPYL HYDROLYZED COLLAGEN
A gentle conditioning ingredient that helps reduce static and improve manageability in hair, while providing light moisturization to skin.
Irritation
low
Source
semi-synthetic
A gentle antistatic ingredient that helps hair feel smooth and less frizzy, but offers no deep repair.
Irritation
low
Source
synthetic
A gentle conditioning ingredient that reduces static and softens hair and skin without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, modified collagen that helps soften and smooth skin without clogging pores.
Irritation
low
Source
semi-synthetic
Oleoyl Tyrosine is a gentle, amino-acid-based ingredient that helps reinforce the skin barrier and improve hydration without irritation.
Irritation
low
Source
semi-synthetic
A mild, amino-acid-derived ingredient that conditions skin without irritation, making it a good choice for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
A mild, olive-derived conditioning ingredient that helps soften skin and improve moisture retention without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived conditioning ingredient that helps hair and skin feel soft and smooth without heavy buildup.
Irritation
low
Source
semi-synthetic
A novel, nutrient-dense ingredient that may support skin hydration and barrier function, but clinical evidence is still limited.
Irritation
low
Source
natural
Antistatic Agent
Oxidized Starch Hydroxypropyltrimonium Chloride
A gentle, positively charged starch that helps hair feel soft and smooth while reducing static and flyaways.
Irritation
low
Source
semi-synthetic
Oyster extract is a mineral-rich ingredient that may help hydrate and soothe skin, but research on its cosmetic benefits is still emerging.
Irritation
low
Source
natural
A mild, palm-derived conditioning ingredient that reduces frizz and improves manageability without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle conditioning ingredient that reduces static and improves hair manageability, but its palm oil origin raises sustainability questions.
Irritation
low
Source
semi-synthetic
Conditioning Agent
Palmitoleamidopropyl Dimethylamine Lactate
A gentle conditioning ingredient that helps soften hair and skin without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, synthetic amino acid derivative that helps support the skin barrier and improve moisture retention without irritation.
Irritation
low
Source
synthetic
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
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
Film Former
Palmitoyl Hydroxypropyltrimonium Amylopectin/Glycerin Crosspolymer
A gentle, starch-derived conditioning polymer that helps smooth hair and reduce static without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, lipid-enriched mare milk derivative that may help moisturize and condition skin, but research is limited.
Irritation
low
Source
natural
A gentle, plant-based conditioning ingredient that helps soften and smooth skin without irritation.
Irritation
low
Source
semi-synthetic
Skin conditioning agent
Palmitoyl Serine/Silk Amino Acids Methyl Esters
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
A gentle, modified form of vitamin B5 that helps condition skin and hair with a silky feel, but research on this specific derivative is limited.
Irritation
low
Source
semi-synthetic
Hair Conditioning Agent
Panthenyl Hydroxypropyl Steardimonium Chloride
A gentle, panthenol-derived conditioning ingredient that improves hair softness and manageability without heavy buildup.
Irritation
low
Source
semi-synthetic
Conditioning Agent
PASSIFLORA EDULIS SEED OIL/PALM OIL/ AMINOPROPANEDIOL ESTERS ACETATE ETHYLDIMONIUM CHLORIDE
A gentle conditioning agent that helps soften hair and skin without heavy buildup, but its palm oil source raises sustainability questions.
Irritation
low
Source
semi-synthetic
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation for sensitive scalps.
Irritation
moderate
Source
synthetic
Conditioning Agent
PEG-12 METHYL ETHER LAUROXY PEG-5 AMIDOPROPYL DIMETHICONE
A silicone-based conditioning agent that smooths hair and skin, but may build up with frequent use.
Irritation
low
Source
synthetic
A synthetic conditioning ingredient that reduces static and softens hair, but may cause irritation for sensitive scalps at high concentrations.
Irritation
moderate
Source
synthetic
Antistatic Agent
PEG-2 Dimeadowfoamamidoethylmonium Methosulfate
A mild, plant-derived conditioning ingredient that softens hair and reduces static without heavy buildup.
Irritation
low
Source
semi-synthetic
Antistatic Agent
PEG-2 LAURDIMONIUM BROMIDE NYLON-6 CROSSPOLYMER
A synthetic polymer that helps reduce static and improve hair smoothness, but offers limited benefits beyond basic conditioning.
Irritation
low
Source
synthetic
Antistatic agent
PEG-3 Disoyoylamidoethylmonium Methosulfate
A synthetic conditioning agent that reduces static and improves hair feel, but may build up over time with frequent use.
Irritation
low
Source
synthetic
Antistatic Agent
PEG-3 TALLOW PROPYLENEDIMONIUM DIMETHOSULFATE
A conditioning ingredient from animal-derived tallow that softens hair and reduces static, but may be too heavy for fine hair or oily skin.
Irritation
moderate
Source
semi-synthetic
A gentle synthetic conditioner that smooths hair and fights frizz, but may not suit ultra-sensitive scalps.
Irritation
low
Source
synthetic
A gentle, semi-synthetic conditioning ingredient that may support skin barrier function, but research is limited and it's not a star performer on its own.
Irritation
low
Source
semi-synthetic
A gentle, coconut-derived conditioning ingredient that helps reduce static and soften hair without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle silicone that smooths hair and reduces frizz without heavy buildup, but may not suit very fine or low-porosity hair.
Irritation
low
Source
synthetic
A gentle, water-soluble silicone that helps products glide on smoothly without a heavy or greasy feel.
Irritation
low
Source
semi-synthetic
A gentle silicone that coats hair to reduce tangles and add shine without heavy buildup.
Irritation
low
Source
synthetic
PEG-9 Dinicotinate is a synthetic derivative of niacin (vitamin B3) that may support skin microcirculation and barrier function, but research is limited and it's less common than niacinamide.
Irritation
low
Source
synthetic
A synthetic conditioning ingredient that helps reduce static and improve the feel of hair and skin, but may not suit those avoiding PEGs.
Irritation
low
Source
synthetic
Hair Conditioning Agent
PENTACLETHRA MACROLOBA SEED AMIDE DMAPA
A gentle conditioning ingredient that helps soften hair and skin without heavy buildup, though research is limited.
Irritation
low
Source
semi-synthetic
A synthetic fluorinated ingredient that helps repel water and reduce frizz, but its environmental persistence raises concerns.
Irritation
low
Source
synthetic
A synthetic fluorinated compound that may help deliver oxygen to the skin, but its cosmetic benefits are not well-established and it is rarely used.
Irritation
low
Source
synthetic
Perfluorodecalin is a synthetic oxygen carrier that may temporarily improve skin oxygenation and radiance, but its cosmetic benefits are still being studied.
Irritation
low
Source
synthetic
A gentle silicone that coats hair strands for slip, shine, and manageability, with less buildup than traditional dimethicone.
Irritation
low
Source
synthetic
Antistatic Agent
PG-Hydroxyethylcellulose Cocodimonium Chloride
A gentle conditioning polymer that smooths hair and reduces static without heavy buildup.
Irritation
low
Source
semi-synthetic
Film Former
PG-Hydroxyethylcellulose Lauryldimonium Chloride
A gentle conditioning polymer that helps detangle hair and reduce flyaways without heavy buildup.
Irritation
low
Source
semi-synthetic
Pisces Extract is a fish-derived ingredient that may offer moisturizing benefits, but scientific evidence is limited and it may not be suitable for vegans or those with fish allergies.
Irritation
low
Source
natural
Polyquaternium is a synthetic polymer that smooths hair and skin by forming a thin, flexible film, but some types may cause buildup with frequent use.
Irritation
low
Source
synthetic
A gentle conditioning polymer that reduces flyaways and improves wet combing without heavy buildup.
Irritation
low
Source
semi-synthetic
Film Former
POLYQUATERNIUM-10/PHOSPHORYLCHOLINE GLYCOL ACRYLATE COPOLYMER
A gentle conditioning polymer that leaves hair and skin feeling soft without heavy buildup.
Irritation
low
Source
synthetic
A gentle, effective detangler and antistatic agent that leaves hair smooth and manageable without buildup.
Irritation
low
Source
synthetic
Polyquaternium-106 is a gentle synthetic polymer that smooths hair, reduces frizz, and improves manageability without heavy buildup.
Irritation
low
Source
synthetic
Polyquaternium-107 is a gentle conditioning polymer that reduces frizz and static without heavy buildup, making it suitable for fine or oily hair types.
Irritation
low
Source
synthetic