A gentle, antioxidant-rich root extract that may help soothe skin and fight free radicals, though human studies are limited.
Irritation
low
Source
natural
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, antioxidant-rich root extract that may help soothe skin and fight free radicals, though human studies are limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich seed extract that may help soothe and protect skin, though research is still emerging.
Irritation
low
Source
natural
Triclosan is an effective antimicrobial but has raised safety and environmental concerns, leading to restricted use in many regions.
Irritation
low
Source
synthetic
A synthetic skin-conditioning ingredient that improves product feel without major safety concerns.
Irritation
low
Source
synthetic
A lightweight synthetic ester that makes products feel silky and spread easily without greasiness.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that helps skin feel smooth and soft without clogging pores, commonly used in makeup and moisturizers.
Irritation
low
Source
synthetic
A lightweight synthetic ester that improves product feel without heavy greasiness, generally well-tolerated.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a fresh, woody note but offers no skincare benefits and may be unnecessary for sensitive noses.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant fragrance but offers no skincare benefit; safe for most people but may cause reactions in those sensitive to fragrance.
Irritation
low
Source
synthetic
A synthetic fragrance compound that provides a pleasant woody-floral scent, but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient that adds a fresh, citrusy scent; generally considered safe at low concentrations but offers no skincare benefits.
Irritation
low
Source
synthetic
Tridecan-2-One is a synthetic fragrance ingredient with a low irritation risk, but it offers no skincare benefits beyond scent.
Irritation
low
Source
synthetic
Tridecanal is a synthetic fragrance ingredient that adds a fresh, citrusy note to products, but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Tridecane is a gentle, lightweight emollient that helps products glide on smoothly without a greasy feel.
Irritation
low
Source
synthetic
Tridecenal is a synthetic fragrance compound that adds a fresh, citrus scent but may cause irritation in sensitive individuals.
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
A gentle, non-stripping cleansing ingredient that helps remove impurities while maintaining skin comfort.
Irritation
low
Source
semi-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
A gentle synthetic surfactant that helps cleanse without stripping the skin, commonly found in mild cleansers.
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, water-soluble surfactant that helps cleanse without stripping the skin’s natural moisture barrier.
Irritation
low
Source
semi-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 gentle synthetic surfactant that effectively cleanses without stripping the skin's natural moisture barrier.
Irritation
low
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 oil and water in cleansers and lotions, generally well-tolerated but not a standout active ingredient.
Irritation
low
Source
synthetic
A gentle, semi-synthetic surfactant that helps cleanse without stripping the skin, making it a good choice for sensitive skin formulas.
Irritation
low
Source
semi-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
Trideceth-7 is a gentle synthetic emulsifier that helps mix water and oil in skincare products, with a low risk of irritation.
Irritation
low
Source
synthetic
A gentle synthetic surfactant that helps cleanse without stripping the skin, often used in milder 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, modified silicone that smooths hair and skin without heavy buildup, but may not suit those avoiding all silicones.
Irritation
low
Source
synthetic
A gentle fatty alcohol that softens skin and improves product texture without common irritation.
Irritation
low
Source
synthetic
A gentle, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.
Irritation
low
Source
synthetic
A gentle, plant-based emollient that hydrates without greasiness, suitable for most skin types including sensitive and oily skin.
Irritation
low
Source
natural
Tridecyl Erucate is a gentle, non-greasy emollient that helps soften and smooth the skin without clogging pores.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily and combination skin types.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or combination skin types.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.
Irritation
low
Source
synthetic
Tridecyl Myristate is a reliable emollient that softens skin but may clog pores for acne-prone individuals.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or acne-prone types.
Irritation
low
Source
synthetic
A gentle, oil-soluble salicylate ester that helps smooth skin texture without the irritation often linked to salicylic acid.
Irritation
low
Source
semi-synthetic
Tridecyl Stearate is a gentle emollient that helps soften and smooth the skin without feeling greasy.
Irritation
low
Source
synthetic
A gentle, non-greasy emollient that helps soften skin and improve product texture without clogging pores.
Irritation
low
Source
synthetic
Tridecyl Trimellitate is a lightweight synthetic emollient that helps skincare products feel silky and spread smoothly without clogging pores.
Irritation
low
Source
synthetic
An effective cleansing surfactant, but may be drying or irritating for sensitive skin types.
Irritation
moderate
Source
synthetic
A gentle botanical extract with antioxidant and soothing potential, but research is limited and benefits are not well-established.
Irritation
low
Source
natural
Triethanolamine is a common pH adjuster that helps formulas feel balanced, but it can be irritating for sensitive skin at higher concentrations.
Irritation
moderate
Source
synthetic
A reliable emulsifier that helps create smooth, stable creams and lotions, but may cause mild irritation in sensitive skin at high concentrations.
Irritation
low
Source
synthetic
Hair Conditioning Agent
Triethonium Hydrolyzed Collagen Ethosulfate
A gentle, modified collagen that helps hair feel softer and smoother without heavy buildup.
Irritation
low
Source
semi-synthetic
A synthetic silicone used to coat pigments and powders, making them smoother, more water-resistant, and easier to blend.
Irritation
low
Source
synthetic
Film Former
TRIETHOXYSILYLETHYL DIMETHICONE/METHICONE COPOLYMER
A silicone polymer that helps products stay put and resist water, but may feel heavy on some skin types.
Irritation
low
Source
synthetic