A gentle plant extract with antioxidant potential, but research on its cosmetic benefits is still 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 plant extract with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited and benefits are not yet well-established.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research in topical skincare is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
natural
Caramel is a safe, natural colorant that adds a warm tint to products but offers no skincare benefits.
Irritation
low
Source
natural
A gentle, water-friendly emulsifier derived from andiroba oil that helps blend oils and water in cleansers and creams without stripping the skin.
Irritation
low
Source
semi-synthetic
A gentle, plant-based emulsifier that helps blend oil and water in your skincare products while providing mild skin conditioning.
Irritation
low
Source
semi-synthetic
A gentle, plant-based oil that hydrates and soothes without clogging pores, ideal for dry or sensitive skin.
Irritation
low
Source
natural
Caraway Fruit Extract offers antioxidant and soothing benefits, but research on its efficacy in skincare is still emerging.
Irritation
low
Source
natural
Caraway fruit oil offers antimicrobial benefits and a warm, herbal scent, but its strong essential oil nature means it can irritate sensitive skin if used undiluted.
Irritation
moderate
Source
natural
Carbocysteine is a gentle, hydrating amino acid derivative that may help support skin barrier health, but research in topical cosmetics is still limited.
Irritation
low
Source
synthetic
A safe, widely used thickener that gives gels and creams their smooth texture without clogging pores.
Irritation
low
Source
synthetic
Carbon is a safe, non-irritating ingredient used mainly for its absorbent and coloring properties in skincare.
Irritation
low
Source
natural
Carbon Black is a common black pigment in cosmetics, generally safe for external use but may be irritating if inhaled or used near eyes in high amounts.
Irritation
low
Source
synthetic
Carbon dioxide is a safe, widely used propellant in aerosol cosmetics, but it offers no direct skin benefit.
Irritation
low
Source
natural
Carbon fiber is a synthetic material used mainly for texture and bulk in cosmetics, with minimal direct skin benefit and very limited research on long-term safety in leave-on products.
Irritation
low
Source
synthetic
Carbonado Extract is a natural diamond powder used for physical exfoliation, but its abrasiveness requires careful formulation to avoid skin damage.
Irritation
moderate
Source
natural
A gentle silicone that helps products glide on smoothly and leaves a soft, non-greasy finish.
Irritation
low
Source
synthetic
Carboxyethyl acrylate is a synthetic polymer that helps create a smooth, even film on skin, improving product texture and water resistance.
Irritation
low
Source
synthetic
A gentle, water-loving amino-acid derivative that helps hydrate and calm the skin, but research is still early.
Irritation
low
Source
synthetic
A synthetic antioxidant that may help protect skin from environmental stress, but research is still emerging.
Irritation
low
Source
synthetic
A gentle enzyme that helps loosen dead skin cells by breaking down surface bonds, offering mild exfoliation without harsh scrubbing.
Irritation
low
Source
biotech
A gentle, film-forming chitosan derivative that helps lock in moisture and may support skin barrier function.
Irritation
low
Source
semi-synthetic
A gentle, water-soluble chitosan derivative that hydrates and forms a protective film on skin, with some soothing and antioxidant potential.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic ingredient that forms a breathable film on skin to lock in moisture and provide a smooth feel.
Irritation
low
Source
semi-synthetic
A gentle, water-loving derivative of chitosan that helps hydrate and form a protective film on the skin, with early research suggesting soothing benefits.
Irritation
low
Source
semi-synthetic
A gentle, non-irritating thickener that improves product texture without clogging pores.
Irritation
low
Source
semi-synthetic
A synthetic conditioning agent that helps hair feel soft and smooth, but it's not as widely studied as more common ingredients.
Irritation
low
Source
synthetic
A gentle, biotech-derived film former that helps lock in moisture and may soothe the skin without clogging pores.
Irritation
low
Source
biotech
Cardamom Seed Extract offers antioxidant and soothing benefits, but research on its topical effects is still emerging.
Irritation
low
Source
natural
Cardamom seed oil adds a warm, spicy scent and offers antioxidant benefits, but its essential oil nature means it can be irritating for sensitive skin.
Irritation
moderate
Source
natural
Cardamom seed powder offers gentle physical exfoliation and antioxidant benefits, but research on its cosmetic efficacy is limited.
Irritation
low
Source
natural
A synthetic fragrance compound that adds a fresh, woody scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A gentle plant-root extract with antioxidant and soothing potential, but research is limited and benefits are not yet well-established in clinical studies.
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, lab-grown root extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
Carlina Root Extract is a gentle botanical with antioxidant and soothing potential, but research is still early and it's not a powerhouse ingredient on its own.
Irritation
low
Source
natural
Carmine gives a vibrant red or pink hue but may cause allergic reactions in sensitive individuals and is not vegan-friendly.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but limited human studies to back dramatic claims.
Irritation
low
Source
natural
Carnation Flower Oil adds a pleasant floral scent to products but has limited proven skincare benefits and may cause irritation for sensitive skin.
Irritation
moderate
Source
natural
A gentle, lightly astringent floral water that adds a pleasant scent and mild soothing feel to skincare, but lacks strong clinical backing.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human studies.
Irritation
low
Source
natural
Carnauba acid wax is a natural, plant-based wax that gives cosmetics a smooth texture and glossy shine, with a low risk of irritation.
Irritation
low
Source
natural
Carnauba wax is a natural, plant-based thickener and shiner commonly found in lip products and creams, with a very low risk of irritation or clogged pores.
Irritation
low
Source
natural
A natural plant wax that gives products a smooth texture and glossy finish, generally safe and non-irritating for most skin types.
Irritation
low
Source
natural
Carnitine is a gentle antioxidant that may help protect skin from environmental stress and support a more youthful appearance.
Irritation
low
Source
natural
A gentle, semi-synthetic ingredient that may help support the skin barrier and provide antioxidant protection, though research is still emerging.
Irritation
low
Source
semi-synthetic
A gentle, water-loving ingredient that pulls moisture into the skin and helps maintain a healthy barrier.
Irritation
low
Source
semi-synthetic
Carnitine Tartrate is a gentle, multi-tasking ingredient that helps balance oil production, supports skin barrier health, and offers antioxidant protection.
Irritation
low
Source
semi-synthetic
A powerful rosemary-derived antioxidant that helps defend skin from pollution and UV stress, but is less studied than vitamin C or E.
Irritation
low
Source
natural
Carnosine is a gentle antioxidant that may help protect skin from aging and environmental stress, but more human studies are needed to confirm its benefits.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from carob fruit that helps soothe and protect the skin from environmental stress.
Irritation
low
Source
natural
Carob seed extract is a gentle, plant-based antioxidant that helps soothe and protect the skin from environmental stress.
Irritation
low
Source
natural
Carotenoids are plant-derived antioxidants that help defend skin against environmental stress and may support a more even tone, but they are sensitive to light and air.
Irritation
low
Source
natural
A gentle plant extract that may help calm skin and fight free radicals, though research is still early.
Irritation
low
Source
natural
A gentle red algae extract that helps hydrate and soothe the skin, with emerging research on its antioxidant potential.
Irritation
low
Source
natural
Carpronium chloride is a synthetic ingredient that helps control microbes and condition skin or hair, but it may cause irritation for sensitive individuals.
Irritation
moderate
Source
synthetic
Carrageenan is a natural seaweed extract that helps thicken and soothe skincare products, but its film-forming effect may not suit everyone.
Irritation
low
Source
natural
A gentle, lab-grown carrot extract that may help protect skin from environmental stress and support a more even tone.
Irritation
low
Source
biotech
A gentle, antioxidant-rich flower extract that may help calm skin and fight free radicals, but research is still limited.
Irritation
low
Source
natural