A lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.
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 lightweight, non-greasy emollient that helps soften skin and improve product texture without clogging pores.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that softens skin and helps products spread smoothly.
Irritation
low
Source
synthetic
Isocetyl Laurate is a lightweight, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps soften and smooth skin without clogging pores.
Irritation
low
Source
synthetic
Isocetyl Myristate is a reliable emollient that softens skin, but it may clog pores for some people.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that softens skin without a greasy feel, but may clog pores for some people.
Irritation
low
Source
synthetic
Isocetyl Salicylate is a gentle emollient that also offers mild salicylic acid-like benefits, making it a good option for smoothing skin without irritation.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps skin feel soft and smooth without clogging pores.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps soften and smooth skin without clogging pores.
Irritation
low
Source
synthetic
A gentle marine-sourced extract that helps calm and protect the skin, though research is still emerging.
Irritation
low
Source
natural
Isocineole is a gentle, plant-derived compound that may help calm skin and provide a cooling sensation, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A synthetic film-former that helps makeup last longer and resist water, but may feel tight or stiff on some skin types.
Irritation
low
Source
synthetic
Isocyclocitral is a synthetic fragrance that provides a fresh citrus scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Isocyclogeraniol is a synthetic fragrance ingredient that adds a floral scent but offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A gentle, coconut-derived cleansing agent that helps remove dirt and oil without stripping the skin.
Irritation
low
Source
semi-synthetic
Isodeceth-4 is a gentle synthetic emulsifier that helps mix oil and water in cleansers and lotions, with a low risk of irritation.
Irritation
low
Source
synthetic
Isodeceth-5 is a workhorse emulsifier that helps products feel smooth, but it can be drying or irritating for sensitive skin if used in high amounts.
Irritation
moderate
Source
synthetic
Isodeceth-6 is a mild synthetic emulsifier that helps cleansers rinse away dirt and oil, but it may cause irritation for very sensitive skin.
Irritation
moderate
Source
synthetic
Isodecyl Acetate is a lightweight synthetic emollient that helps products glide on smoothly without a greasy feel, making it a popular choice for non-oily formulations.
Irritation
low
Source
synthetic
Isodecyl Acrylate is a synthetic film-former that helps skincare products spread smoothly and feel silky, but it offers no active skin benefits.
Irritation
low
Source
synthetic
Isodecyl Alcohol is a gentle synthetic emollient that helps products spread smoothly and feel less greasy, but it offers no active skin benefits on its own.
Irritation
low
Source
synthetic
Isodecyl Citrate is a lightweight emollient that softens skin without greasiness, making it a good choice for non-comedogenic formulas.
Irritation
low
Source
semi-synthetic
Isodecyl Cocoate is a gentle, non-greasy emollient that helps skin feel soft and smooth, making it a good choice for sensitive or acne-prone skin.
Irritation
low
Source
semi-synthetic
A lightweight, non-greasy emollient that spreads easily and helps other ingredients absorb better.
Irritation
low
Source
synthetic
A gentle synthetic emollient that softens skin and improves product texture without clogging pores.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that softens skin without clogging pores, making it a good choice for sensitive or acne-prone skin.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that softens skin without clogging pores, ideal for oily or acne-prone skin types.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that softens skin and improves product texture with a low risk of irritation or clogged pores.
Irritation
low
Source
synthetic
Isodecyl Myristate is a lightweight synthetic emollient that softens skin and improves product feel, but it has a moderate chance of clogging pores for acne-prone individuals.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.
Irritation
low
Source
synthetic
Isodecyl Oleate is a lightweight emollient that softens skin but may clog pores for some people.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that hydrates without greasiness, but may clog pores for acne-prone skin.
Irritation
low
Source
synthetic
Isodecyl Salicylate is a gentle emollient that softens skin and enhances product texture, with low irritation potential.
Irritation
low
Source
synthetic
Isodecyl Stearate is a lightweight emollient that softens skin without heavy greasiness, but it may clog pores for some people.
Irritation
low
Source
synthetic
Isodecylparaben is a paraben preservative that is effective at low concentrations, but its safety is debated due to potential endocrine-disrupting properties.
Irritation
low
Source
synthetic
Isododecane is a lightweight, volatile emollient that helps products spread smoothly and dry quickly without a greasy feel.
Irritation
low
Source
synthetic
A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is still early and benefits are not yet proven in large human studies.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant and soothing potential, but research is still early and benefits are not yet proven in large human studies.
Irritation
low
Source
natural
A lightweight, non-greasy emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.
Irritation
low
Source
synthetic
Isoeugenol is a fragrant compound that adds a warm, spicy scent to products but can be a common skin sensitizer for some people.
Irritation
moderate
Source
natural
Isoeugenyl Acetate is a synthetic fragrance compound with a warm, spicy scent, but it can be a skin sensitizer for some people.
Irritation
moderate
Source
synthetic
Isoeugenyl Benzoate is a synthetic fragrance compound that adds a warm, floral scent but can be a skin sensitizer for some people.
Irritation
moderate
Source
synthetic
Isoeugenyl Phenylacetate is a synthetic fragrance ingredient that provides a sweet, floral scent but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A silky, non-greasy emollient that hydrates and smooths skin with a low risk of irritation or clogged pores.
Irritation
low
Source
natural
A gentle, lightweight emollient that softens skin without clogging pores or feeling heavy.
Irritation
low
Source
synthetic
A silky, lightweight emollient that spreads easily and leaves a non-greasy finish, making it a favorite in sunscreens and lightweight moisturizers.
Irritation
low
Source
synthetic
A lightweight synthetic emollient that spreads easily and leaves skin feeling soft, but may clog pores for some people.
Irritation
low
Source
synthetic
A mild synthetic surfactant that helps cleansers foam and rinse clean, but may cause dryness or irritation for very sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic emulsifier that helps products rinse cleanly but may be drying for sensitive skin.
Irritation
moderate
Source
synthetic
Isolaureth-4 Phosphate is a mild cleansing agent that helps remove dirt and oil, but may cause slight irritation for very sensitive skin.
Irritation
moderate
Source
synthetic
Isolaureth-6 is a synthetic cleansing agent that helps remove dirt and oil, but may be slightly drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A gentle, non-greasy emollient that softens skin without clogging pores, ideal for sensitive and oily skin types.
Irritation
low
Source
synthetic
Isoleptospermone is a plant-derived compound with promising antimicrobial activity, but research in cosmetic applications is still limited.
Irritation
low
Source
natural
Isoleucine is a gentle amino acid that helps maintain skin hydration and supports the skin's natural repair processes.
Irritation
low
Source
natural
Isolongifolanone is a safe, widely used fragrance ingredient that adds a warm, woody scent but offers no direct skincare benefit.
Irritation
low
Source
semi-synthetic
A synthetic woody fragrance ingredient that is generally considered safe at low concentrations but offers no skincare benefits.
Irritation
low
Source
synthetic
A woody, balsamic fragrance ingredient that is generally safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
natural
Isomalt is a gentle, sugar-derived humectant that helps skin retain moisture without stickiness.
Irritation
low
Source
semi-synthetic
Isomenthone provides a cooling sensation and fresh scent in skincare, but can be irritating for sensitive skin at higher concentrations.
Irritation
moderate
Source
natural