A synthetic polymer that helps products stay put, resist water, and feel smooth on skin or hair.
Irritation
low
Source
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 synthetic polymer that helps products stay put, resist water, and feel smooth on skin or hair.
Irritation
low
Source
synthetic
An effective antistatic and conditioning agent for hair, but may cause irritation for sensitive scalps at higher concentrations.
Irritation
moderate
Source
semi-synthetic
A gentle surfactant that cleanses without stripping, often used to soften the feel of stronger cleansers.
Irritation
low
Source
semi-synthetic
An effective hair conditioner and antistatic agent, but may cause irritation or clog pores for sensitive or acne-prone skin.
Irritation
moderate
Source
semi-synthetic
A synthetic conditioning agent that reduces static and improves feel in hair products, but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
synthetic
PEG-15 Stearmonium Chloride is a synthetic conditioning ingredient that reduces static and softens hair, but it may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
synthetic
An effective hair conditioner but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
semi-synthetic
A synthetic conditioning agent that reduces static and adds softness, but may cause irritation for sensitive skin or eyes.
Irritation
moderate
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
PEG-2 Oleammonium Chloride is a synthetic conditioning agent that reduces static and softens hair, but it may cause irritation for sensitive skin or clog pores in acne-prone individuals.
Irritation
moderate
Source
synthetic
A gentle conditioning ingredient from rapeseed oil that helps soften hair and skin without heavy buildup.
Irritation
low
Source
semi-synthetic
PEG-2 Stearamine is a synthetic ingredient that helps hair feel soft and reduces static, but it may be mildly irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic conditioning agent that helps reduce static and improve hair feel, but may cause buildup with frequent use.
Irritation
low
Source
synthetic
Film Former
C18-22 ALKYL PEG-25 METHACRYLATE/DIETHYLAMINOETHYL METHACRYLATE COPOLYMER
A synthetic polymer that helps products stay put, resist water, and feel smooth, but offers no active skincare benefit.
Irritation
low
Source
synthetic
A synthetic conditioning agent that helps detangle and soften hair, but has limited published safety data.
Irritation
low
Source
synthetic
A gentle silicone that smooths skin and hair without heavy buildup, but may not suit those avoiding silicones entirely.
Irritation
low
Source
semi-synthetic
Antistatic Agent
PEG-3 Dioleoylamidoethylmonium Methosulfate
A gentle synthetic conditioning agent that reduces static and softens hair without heavy buildup.
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 DISTEAROYLAMIDOETHYLMONIUM METHOSULFATE
A gentle synthetic conditioner that helps reduce static and soften hair without heavy buildup.
Irritation
low
Source
synthetic
A conditioning ingredient that can improve softness and manageability, but may be irritating or clog pores for some.
Irritation
moderate
Source
semi-synthetic
An effective hair conditioner derived from animal fat, but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
semi-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 synthetic film former that helps makeup and sunscreen stay put longer, but may feel tight or heavy on some skin types.
Irritation
low
Source
synthetic
Thickener
HYDROGENATED DIMER DILINOLEYL PEG-44/POLY(1,2-BUTANEDIOL)-15 DIMETHYL ETHER
A synthetic polymer that helps create a smooth, non-greasy gel texture in skincare and haircare products, with a low irritation profile.
Irritation
low
Source
synthetic
A gentle, coconut-derived conditioning ingredient that helps reduce static and soften hair without heavy buildup.
Irritation
low
Source
semi-synthetic
A synthetic ingredient that helps products feel smooth and stay fresh, but may cause irritation for sensitive skin.
Irritation
moderate
Source
synthetic
A gentle synthetic conditioner that helps detangle and soften hair without heavy buildup.
Irritation
low
Source
synthetic
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation for sensitive scalps at higher concentrations.
Irritation
moderate
Source
synthetic
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation for sensitive scalps at higher concentrations.
Irritation
moderate
Source
synthetic
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation for sensitive scalps.
Irritation
moderate
Source
synthetic
A conditioning ingredient that can reduce static and soften hair, but may cause irritation or clog pores in some people.
Irritation
moderate
Source
semi-synthetic
A gentle silicone derivative that improves product feel and spreadability without heavy residue, suitable for most skin types.
Irritation
low
Source
semi-synthetic
A gentle silicone that helps products glide on smoothly without feeling heavy or greasy.
Irritation
low
Source
semi-synthetic
A synthetic conditioning agent that helps hair feel soft and smooth, but its safety data is limited compared to more common alternatives.
Irritation
low
Source
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
Conditioning Agent
POTASSIUM DIMETHICONE PEG-7 PANTHENYL PHOSPHATE
A gentle silicone derivative that conditions hair and skin while adding a touch of moisture from panthenol (provitamin B5).
Irritation
low
Source
semi-synthetic
Film Former
PEG-7/PPG-2 PENTAERYTHRITYL TRIACRYLATE/DIPROPYLAMINOPROPIONATE
A synthetic film-former that helps products stay put, but offers no active skincare benefit.
Irritation
low
Source
synthetic
A gentle silicone that coats hair to reduce tangles and add shine without heavy buildup.
Irritation
low
Source
synthetic
Film Former
PEG-8 Dimethicone/Polysorbate 20 Crosspolymer
A synthetic silicone polymer that improves water resistance and wear time in cosmetics, generally well-tolerated but not biodegradable.
Irritation
low
Source
synthetic
Conditioning Agent
PEG-8 Distearmonium Chloride PG-Dimethicone
A dual-action silicone and quaternary ammonium compound that smooths hair and skin without heavy buildup.
Irritation
low
Source
synthetic
A synthetic film-former that helps products resist water and humidity, but may cause buildup over time.
Irritation
low
Source
synthetic
Antistatic Agent
PEG-8 Palmitoyl Methyl Diethonium Methosulfate
A synthetic conditioning agent that helps soften hair and reduce static, generally safe in rinse-off products but may cause buildup with heavy use.
Irritation
low
Source
synthetic
A high-performance silicone that helps products resist water and sweat, but may feel heavy on some skin types.
Irritation
low
Source
synthetic
A synthetic film-former that helps makeup and sunscreen stay put longer, but offers no active skincare benefit.
Irritation
low
Source
synthetic
A synthetic polymer that helps products spread smoothly and form a flexible film on skin or hair.
Irritation
low
Source
synthetic
A synthetic conditioning agent that helps reduce static and soften hair, generally considered safe for most people.
Irritation
low
Source
synthetic
A gentle silicone that makes products feel silky and spread easily, with low irritation and clogging risk.
Irritation
low
Source
semi-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
A gentle silicone that gives skin and hair a silky, smooth feel without clogging pores, but may not be ideal for those avoiding silicones.
Irritation
low
Source
synthetic
A synthetic film-former that helps makeup and hair products resist water and last longer, but offers no skincare benefit.
Irritation
low
Source
synthetic
A gentle synthetic ingredient that helps products feel silky and spread evenly without clogging pores.
Irritation
low
Source
synthetic
A gentle silicone that improves texture and feel in skincare and haircare, but may not suit those avoiding silicones.
Irritation
low
Source
semi-synthetic
A gentle silicone that improves product feel and spreadability, generally well-tolerated by most skin types.
Irritation
low
Source
semi-synthetic
A gentle silicone that makes products feel silky and spread easily, but may not suit those avoiding silicones entirely.
Irritation
low
Source
synthetic
A synthetic polymer that helps products spread smoothly and leaves a light, flexible film on skin or hair for a conditioned feel.
Irritation
low
Source
synthetic
PEI-1500 is a synthetic polymer that helps products spread smoothly and stay put, but it's not a star ingredient for skin health.
Irritation
low
Source
synthetic