An effective foam booster and thickener, but may cause irritation for sensitive skin and raises some environmental concerns.
Irritation
moderate
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
An effective foam booster and thickener, but may cause irritation for sensitive skin and raises some environmental concerns.
Irritation
moderate
Source
semi-synthetic
Tallow betaine is a mild, naturally-derived surfactant that cleanses without stripping the skin, making it a good choice for sensitive skin.
Irritation
low
Source
natural
A gentle, animal-derived surfactant that helps cleansers feel less stripping, but may be too heavy for oily or acne-prone skin.
Irritation
low
Source
natural
Tallowamide DEA is a foam booster and thickener from animal fat, but it may cause irritation and has raised concerns over potential contamination with cancer-causing impurities.
Irritation
moderate
Source
semi-synthetic
A semi-synthetic foam booster from animal fat that can improve lather but may be drying or irritating for sensitive skin.
Irritation
moderate
Source
semi-synthetic
A mild, animal-derived surfactant that effectively cleanses without stripping the skin, but may not suit vegans or those avoiding animal ingredients.
Irritation
low
Source
natural
An effective foaming and cleansing agent derived from animal fat, but may cause irritation for sensitive skin and raises ethical concerns for those avoiding animal-derived ingredients.
Irritation
moderate
Source
semi-synthetic
Tallowaminopropylamine is a fatty amine from animal fat that helps condition hair and stabilize formulas, but it may be irritating for sensitive skin and is not suitable for vegans.
Irritation
moderate
Source
natural
Talloweth-18 is an effective emulsifier derived from animal fat, but its moderate irritation and comedogenic potential make it better suited for rinse-off cleansers than leave-on products.
Irritation
moderate
Source
semi-synthetic
Talloweth-4 is a functional but controversial emulsifier—effective for cleansing but may cause irritation for sensitive skin and raises ethical concerns due to its animal-derived origin.
Irritation
moderate
Source
semi-synthetic
Talloweth-6 is a workhorse emulsifier in cleansers, but its animal-derived origin and potential for mild irritation may not suit all preferences.
Irritation
moderate
Source
semi-synthetic
Talloweth-7 is a functional but controversial emulsifier — effective at blending ingredients but derived from animal fat and may cause irritation for sensitive skin.
Irritation
moderate
Source
semi-synthetic
A synthetic emulsifier that helps water-resistant formulas spread evenly, but its perfluoroalkyl structure raises environmental persistence concerns.
Irritation
moderate
Source
synthetic
An effective but potentially drying cleanser that works well for oily skin but may irritate sensitive or dry skin.
Irritation
moderate
Source
synthetic
A gentle surfactant that cleans without stripping the skin, making it a good choice for sensitive or dry skin types.
Irritation
low
Source
synthetic
A gentle, coconut-derived cleanser that also conditions skin and hair, but may not be ideal for very dry or sensitive scalps in high concentrations.
Irritation
low
Source
semi-synthetic
A gentle silicone emulsifier that helps create stable, lightweight formulas without heavy residue.
Irritation
low
Source
semi-synthetic
TEA-Isostearate is a synthetic emulsifier that helps cleanse and stabilize formulas, but may cause mild irritation for sensitive skin.
Irritation
moderate
Source
synthetic
TEA-Laurate helps create lather and remove dirt, but it can be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A gentle synthetic surfactant that helps cleanse without stripping the skin's natural moisture barrier.
Irritation
low
Source
synthetic
A gentle, collagen-derived surfactant that cleans without stripping, making it a good choice for sensitive skin and hair.
Irritation
low
Source
semi-synthetic
TEA-Myristate helps cleansers foam and mix oil with water, but it may be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
TEA-Oleate is an effective cleanser but can be drying or irritating for sensitive skin, especially in high concentrations.
Irritation
moderate
Source
synthetic
A mild cleansing and conditioning ingredient that can help clean skin and hair without stripping, but may cause irritation for sensitive skin.
Irritation
moderate
Source
semi-synthetic
A mild, castor-oil-derived emulsifier that helps rinse away makeup and sunscreen without stripping the skin.
Irritation
low
Source
semi-synthetic
A synthetic emulsifier that helps water-resistant formulas spread evenly, but its fluorinated chemistry raises environmental persistence concerns.
Irritation
low
Source
synthetic
Surfactant
Triethanolamine Polyoxyethylene Alkylphenylether Phosphate
A synthetic surfactant that helps cleanse and emulsify, but may be slightly drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
TEA-Stearate helps cleansers foam and creams stay smooth, but it may be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
TEA-Tallate helps cleansers foam and remove oil, but it can be drying or irritating for sensitive skin.
Irritation
moderate
Source
semi-synthetic
A behind-the-scenes helper that boosts cleansing power and prevents mineral buildup, but is generally safe in rinse-off formulas.
Irritation
low
Source
synthetic
A mild synthetic emulsifier that helps blend oil and water in cleansers, generally well-tolerated but not a standout active ingredient.
Irritation
low
Source
synthetic
A mild synthetic emulsifier that helps blend oil and water in cleansers and lotions, generally well-tolerated by most skin types.
Irritation
low
Source
synthetic
An effective cleansing agent that helps remove dirt and oil, but may be slightly drying for sensitive skin.
Irritation
moderate
Source
synthetic
A mild synthetic surfactant that helps cleanse without stripping, but may cause irritation for very sensitive skin.
Irritation
moderate
Source
synthetic
A mild synthetic emulsifier that helps mix water and oil in products without stripping the skin.
Irritation
low
Source
synthetic
A synthetic emulsifier that helps mix oil and water, but may be slightly drying for sensitive skin.
Irritation
moderate
Source
synthetic
An effective emulsifier and surfactant, but may cause irritation in sensitive skin at higher concentrations.
Irritation
moderate
Source
synthetic
A gentle, phosphate-based surfactant that helps cleanse without stripping the skin's natural moisture barrier.
Irritation
low
Source
semi-synthetic
A gentle synthetic emulsifier that helps mix oil and water in cleansers and lotions, with a low irritation profile.
Irritation
low
Source
synthetic
A gentle synthetic emulsifier that helps cleansers and lotions mix and rinse cleanly, but may be too stripping for very dry or sensitive skin.
Irritation
low
Source
synthetic
Trideceth-18 is a gentle synthetic emulsifier that helps mix water and oil in products, but it offers no direct skin benefit.
Irritation
low
Source
synthetic
Trideceth-2 is a gentle synthetic emulsifier that helps mix oil and water, commonly used in cleansers and shampoos for mild cleansing without stripping.
Irritation
low
Source
synthetic
A gentle synthetic emulsifier that helps create stable, creamy formulas without heavy residue.
Irritation
low
Source
synthetic
Trideceth-3 is a synthetic emulsifier that helps mix oil and water, but it may cause mild irritation for sensitive skin types.
Irritation
moderate
Source
synthetic
A mild synthetic emulsifier that helps mix oil and water in cleansers and lotions, generally well-tolerated but not a standout active ingredient.
Irritation
low
Source
synthetic
A mild synthetic emulsifier that helps mix oil and water in cleansers and lotions, generally safe but may be drying for very sensitive skin.
Irritation
low
Source
synthetic
A gentle, synthetic emulsifier that helps mix water and oil in cleansers and lotions without stripping the skin.
Irritation
low
Source
synthetic
A gentle synthetic emulsifier that helps cleansers and lotions mix oil and water without stripping the skin.
Irritation
low
Source
synthetic
A gentle synthetic surfactant that helps cleanse without stripping the skin, often used in mild formulas.
Irritation
low
Source
synthetic
A mild synthetic emulsifier that helps products spread and rinse cleanly, but may be slightly drying for very sensitive skin.
Irritation
moderate
Source
synthetic
A gentle, non-drying surfactant that helps cleanse without stripping the skin's natural moisture barrier.
Irritation
low
Source
semi-synthetic
A gentle synthetic emulsifier that helps mix oil and water, commonly used in cleansers and shampoos.
Irritation
low
Source
synthetic
A gentle, lanolin-derived emulsifier that helps mix oil and water in cleansers and creams, with low irritation potential.
Irritation
low
Source
semi-synthetic
A mild synthetic surfactant that helps cleansers foam and rinse cleanly, but may be slightly drying for very sensitive skin.
Irritation
moderate
Source
synthetic
A gentle, citrate-based surfactant that cleans without stripping the skin, making it a good choice for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
Trilaurylamine is a synthetic emulsifier that helps blend oil and water in rinse-off products, but it may cause irritation for sensitive skin.
Irritation
moderate
Source
synthetic
A mild synthetic surfactant that helps cleansers foam and rinse cleanly, but may be drying for very sensitive skin.
Irritation
moderate
Source
synthetic
A gentle synthetic dispersant that helps pigments and sunscreen actives spread evenly without irritation.
Irritation
low
Source
synthetic
A mild synthetic emulsifier that helps products spread and rinse cleanly, generally well-tolerated by most skin types.
Irritation
low
Source
synthetic
Undeceth-3 is a gentle synthetic surfactant that helps cleansers foam and rinse cleanly without stripping the skin.
Irritation
low
Source
synthetic