A gentle synthetic emulsifier that helps mix water and oil, but offers no direct skin benefit on its own.
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 gentle synthetic emulsifier that helps mix water and oil, but offers no direct skin benefit on its own.
Irritation
low
Source
synthetic
A gentle synthetic emulsifier that helps mix water and oil in your skincare products, with a low risk of irritation.
Irritation
low
Source
synthetic
A synthetic film-former that helps products glide on smoothly and stay put, but offers no active skincare benefit.
Irritation
low
Source
synthetic
A safe, synthetic film-former that helps makeup last longer and resist water, but offers no active skincare benefit.
Irritation
low
Source
synthetic
A gentle synthetic surfactant that helps cleanse without stripping the skin's natural moisture barrier.
Irritation
low
Source
synthetic
A synthetic fluorinated surfactant that helps products spread and clean, but its environmental persistence raises concerns.
Irritation
low
Source
synthetic
Film Former
C6-14 PERFLUOROALKYLETHYL ACRYLATE/HEMA COPOLYMER
Creates a flexible, water-resistant film on skin or lashes, but its perfluoroalkyl chain raises environmental persistence concerns.
Irritation
low
Source
synthetic
A safe, non-greasy synthetic oil that helps products glide on smoothly without clogging pores.
Irritation
low
Source
synthetic
A lightweight, volatile solvent that helps products spread smoothly and evaporate quickly, leaving a non-greasy finish.
Irritation
low
Source
synthetic
A mild synthetic surfactant that helps cleanse without stripping the skin's natural moisture barrier.
Irritation
low
Source
synthetic
A gentle, non-greasy emollient that hydrates and smooths skin, ideal for sensitive and oily skin types.
Irritation
low
Source
natural
Film Former
C8-22 ALKYL ACRYLATES/METHACRYLIC ACID CROSSPOLYMER
A safe, synthetic polymer that improves product texture and stability without clogging pores or causing irritation.
Irritation
low
Source
synthetic
A lightweight, volatile hydrocarbon that helps products spread easily and evaporate quickly without leaving a greasy feel.
Irritation
low
Source
synthetic
A lightweight, volatile hydrocarbon that helps dissolve makeup and sebum without leaving a greasy residue.
Irritation
low
Source
synthetic
A lightweight, non-greasy solvent that helps dissolve makeup and sunscreen while leaving a silky feel on skin.
Irritation
low
Source
synthetic
A gentle, plant-based surfactant that cleanses without stripping the skin's natural moisture barrier.
Irritation
low
Source
semi-synthetic
A lightweight, non-greasy emollient that helps products spread smoothly and evaporates quickly, leaving a silky feel.
Irritation
low
Source
synthetic
A gentle synthetic surfactant that helps cleanse without stripping, but may not suit ultra-sensitive skin in high concentrations.
Irritation
low
Source
synthetic
C9-11 Pareth-4 is a mild synthetic emulsifier that helps cleansers remove dirt and oil, but may be slightly drying for very sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic cleansing agent that helps remove dirt and oil, but may be drying for sensitive skin.
Irritation
moderate
Source
synthetic
A gentle synthetic surfactant that helps cleansers foam and rinse cleanly, but may cause mild irritation for very sensitive skin.
Irritation
moderate
Source
synthetic
A gentle, semi-synthetic surfactant that effectively cleanses without over-drying, making it a good choice for sensitive or dry skin.
Irritation
low
Source
semi-synthetic
A gentle cleansing agent that helps remove dirt and oil without stripping the skin, but may cause irritation in sensitive individuals at high concentrations.
Irritation
moderate
Source
synthetic
A gentle synthetic surfactant that cleanses effectively while being less harsh than traditional sulfates.
Irritation
low
Source
synthetic
A lightweight, non-greasy emollient that helps products spread smoothly and leaves a silky finish without clogging pores.
Irritation
low
Source
synthetic
A gentle, fast-evaporating hydrocarbon that helps products spread smoothly without leaving a greasy feel.
Irritation
low
Source
synthetic
A lightweight, volatile solvent that helps products spread smoothly and evaporate quickly, leaving a non-greasy finish.
Irritation
low
Source
synthetic
A synthetic film-former that helps products resist water and wear, but its environmental persistence raises concerns.
Irritation
low
Source
synthetic
A lightweight synthetic oil that helps products spread smoothly and dissolve makeup, generally safe for most skin types.
Irritation
low
Source
synthetic
A lightweight synthetic oil that helps products glide on smoothly without a greasy feel.
Irritation
low
Source
synthetic
A mild synthetic surfactant that helps cleanse without stripping, but may be slightly drying for very sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic surfactant that helps ingredients spread evenly and stay put, but its fluorinated nature raises environmental persistence concerns.
Irritation
low
Source
synthetic
A synthetic cleansing agent that helps remove dirt and oil, but may be drying for sensitive skin.
Irritation
moderate
Source
synthetic
A lightweight, silicone-like emollient that spreads easily and evaporates quickly, leaving a non-greasy feel.
Irritation
low
Source
synthetic
A safe, lightweight solvent that helps products spread easily and evaporate quickly, but offers no active skincare benefits.
Irritation
low
Source
synthetic
Cabbage leaf water is a gentle, hydrating ingredient that may help soothe the skin, but research on its specific benefits is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from young cabbage sprouts that may help calm and protect skin, though research is still emerging.
Irritation
low
Source
natural
Cabreuva Wood Oil adds a warm, woody scent to products and may offer mild soothing benefits, but its fragrance components can be irritating for sensitive skin.
Irritation
moderate
Source
natural
A gentle, antioxidant-rich plant ingredient from cacao cells that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from the cacao fruit that helps protect skin from environmental stress and may support a healthy glow.
Irritation
low
Source
natural
A gentle, antioxidant-rich powder from cacao fruit that can help soothe and protect the skin, but it's not a cure-all and may not suit very sensitive skin in high concentrations.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle, antioxidant-rich water from cacao seeds that hydrates and soothes skin without the heaviness of cocoa butter.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from cacao shells that helps protect skin from environmental stress without irritation.
Irritation
low
Source
natural
Cade Wood Oil offers purifying and soothing benefits but can be irritating for sensitive skin due to its potent aromatic compounds.
Irritation
moderate
Source
natural
A natural wood powder that gently exfoliates and absorbs excess oil, but may feel gritty and can be drying for sensitive skin.
Irritation
moderate
Source
natural
Cadinene is a natural fragrance component with some antioxidant potential, but its benefits in skincare are not well-established and it may cause irritation in sensitive individuals.
Irritation
moderate
Source
natural
A gentle, plant-derived extract that may help calm skin and fight free radicals, though research is still emerging.
Irritation
low
Source
natural
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, plant-derived antioxidant that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that helps calm and protect the skin from environmental stress.
Irritation
low
Source
natural
A gentle, plant-derived film-former that helps hydrate and soothe skin while creating a protective barrier.
Irritation
low
Source
natural
Antistatic Agent
CAESALPINIA SPINOSA HYDROXYPROPYLTRIMONIUM CHLORIDE
A gentle, plant-derived conditioning agent that helps detangle and soften hair without heavy buildup.
Irritation
low
Source
semi-synthetic
Caffeic acid is a gentle antioxidant that helps defend skin against pollution and UV damage, but it's not a replacement for sunscreen or vitamin C.
Irritation
low
Source
natural
Caffeine is a popular skincare ingredient that can temporarily tighten skin and reduce puffiness, but its long-term anti-aging benefits are still being studied.
Irritation
low
Source
natural
Caffeine benzoate is a gentle, semi-synthetic form of caffeine that may help reduce puffiness and provide antioxidant protection, but its effects are temporary and best used in targeted treatments.
Irritation
low
Source
semi-synthetic
A gentler, modified caffeine that may help protect skin from environmental stress and support a more even tone, though research is still early.
Irritation
low
Source
semi-synthetic
A lab-made peptide fused with caffeine that may help tighten skin and reduce under-eye bags, though research is still early.
Irritation
low
Source
synthetic
A hybrid peptide-caffeine ingredient that may help firm skin and fight oxidative stress, but research is still early.
Irritation
low
Source
semi-synthetic