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
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 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
Caffeine Salicylate blends the energizing effects of caffeine with the exfoliating power of salicylic acid, offering a dual-action ingredient for dull or congested skin.
Irritation
moderate
Source
semi-synthetic
A synthetic peptide that may help improve skin firmness and reduce fine lines, but research is still emerging.
Irritation
low
Source
synthetic
A promising synthetic peptide with antioxidant benefits, but research is still early and it's not a proven alternative to established antioxidants like vitamin C.
Irritation
low
Source
synthetic
A promising peptide-antioxidant hybrid that may help firm skin and fight signs of aging, but research is still early.
Irritation
low
Source
semi-synthetic
A lab-made peptide that may help firm skin and soften wrinkles, but research is still early and results vary.
Irritation
low
Source
synthetic
A lab-made peptide that may help support collagen and reduce fine lines, but human studies are still limited.
Irritation
low
Source
synthetic
A lab-made peptide that may help firm skin and soften lines, but human studies are limited.
Irritation
low
Source
synthetic
A lab-made peptide that may help firm skin and soften lines, but research is still early and results vary.
Irritation
low
Source
synthetic
A lab-made antioxidant that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
synthetic
A synthetic peptide that may help firm skin and soften lines, but research is still early and results vary.
Irritation
low
Source
synthetic
A promising peptide-antioxidant hybrid that may support collagen and protect skin from environmental damage, though human studies are still limited.
Irritation
low
Source
semi-synthetic
A lab-made peptide that may help firm skin and soften lines, but human studies are still limited.
Irritation
low
Source
synthetic
A lab-made peptide that may help smooth wrinkles and improve skin firmness, but human studies are limited.
Irritation
low
Source
semi-synthetic
A lab-made peptide that may help firm skin and soften wrinkles, but research is still early and results vary.
Irritation
low
Source
synthetic
A peptide ingredient that may help improve skin firmness and reduce fine lines, with low irritation potential.
Irritation
low
Source
semi-synthetic
A lab-made peptide that may help firm skin and soften expression lines, but human studies are still limited.
Irritation
low
Source
synthetic
A synthetic peptide that may help support skin firmness and reduce fine lines, but research is still emerging and results vary.
Irritation
low
Source
synthetic
A peptide designed to help reduce fine lines and improve skin firmness by supporting collagen production.
Irritation
low
Source
semi-synthetic
A novel peptide-caffeine compound that may help firm skin and reduce puffiness, but research is still early.
Irritation
low
Source
semi-synthetic
A peptide-caffeine hybrid that may help firm skin and reduce puffiness, but human studies are limited.
Irritation
low
Source
semi-synthetic
A peptide ingredient that may help support skin firmness and reduce the look of fine lines, but research is still early.
Irritation
low
Source
semi-synthetic
A promising synthetic peptide that may help firm skin and soften lines, but human studies are still limited.
Irritation
low
Source
synthetic
A promising synthetic peptide that may help reduce fine lines and support skin firmness, but human research is still limited.
Irritation
low
Source
synthetic
A gentle, plant-based antioxidant that helps defend skin from daily damage and may gradually improve brightness.
Irritation
low
Source
natural
A gentle, plant-based antioxidant extract that may help calm skin and fight free radical damage, though research is still limited.
Irritation
low
Source
natural
Cajaput oil can offer antimicrobial benefits for acne-prone skin, but its potency means it must be used at low concentrations to avoid irritation.
Irritation
moderate
Source
natural
Cajaputi extract offers antimicrobial benefits similar to tea tree oil, but can be irritating for sensitive skin.
Irritation
moderate
Source
natural
Cajeput leaf oil is a natural essential oil with antimicrobial properties that may help with acne, but it can be irritating for sensitive skin and should be used in low concentrations.
Irritation
moderate
Source
natural
A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
A traditional botanical extract with potential soothing and clarifying benefits, but limited modern research and a moderate risk of skin irritation for sensitive types.
Irritation
moderate
Source
natural
Calamine is a gentle, time-tested ingredient that helps calm irritated skin and absorb excess oil, making it a good choice for sensitive or breakout-prone skin.
Irritation
low
Source
natural
A gentle botanical extract with limited but promising research for soothing and antioxidant benefits in skincare.
Irritation
low
Source
natural
A gentle citrus fruit extract that may help brighten skin and fight free radicals, but research is still limited compared to more established antioxidants.
Irritation
low
Source
natural
A natural citrus fruit juice that may offer mild brightening and antioxidant benefits, but can be irritating for sensitive skin due to its acidity.
Irritation
moderate
Source
natural
Calamus root extract may offer soothing and antimicrobial benefits, but its safety is debated due to potential carcinogenic compounds in some varieties.
Irritation
moderate
Source
natural
Calamus root oil adds a warm, spicy scent to products but has limited research on skin benefits and may cause irritation in sensitive individuals.
Irritation
moderate
Source
natural
A mild botanical water that may offer soothing benefits, but research is limited and some safety concerns exist regarding certain chemotypes.
Irritation
low
Source
natural
A gentle orchid extract with antioxidant potential, but research is limited and benefits are not well-established.
Irritation
low
Source
natural
Calcite is a safe, natural mineral that helps absorb oil and provide gentle texture in powders and scrubs, but it offers no active skincare benefits.
Irritation
low
Source
natural
Calcium acetate is a safe, low-irritation pH adjuster that helps keep your skincare products stable and gentle on your skin, but it doesn't provide direct skin benefits like hydration or anti-aging.
Irritation
low
Source
synthetic
A gentle, seaweed-derived thickener that can help soothe and calm the skin while improving product texture.
Irritation
low
Source
natural
A safe, non-reactive mineral that improves texture and feel in makeup and skincare, but offers no active skin benefits.
Irritation
low
Source
synthetic
A gentler, non-acidic form of vitamin C that brightens skin and fights free radicals with minimal irritation.
Irritation
low
Source
semi-synthetic
Calcium Aspartate is a gentle mineral-amino acid ingredient that may help support skin hydration and barrier function, but research is still early.
Irritation
low
Source
synthetic
Calcium Behenate is a safe, non-irritating ingredient that helps give cosmetics a smooth, creamy texture and stable consistency.
Irritation
low
Source
synthetic
Calcium benzoate is a safe, effective preservative that helps keep products fresh, but may cause mild irritation in sensitive individuals at high concentrations.
Irritation
low
Source
synthetic
A gentle, plant-derived lipid that may help calm irritation and support the skin barrier, though research is still emerging.
Irritation
low
Source
natural
A safe, natural mineral that works as a gentle scrubber and thickener, but can be too harsh for sensitive skin in high concentrations.
Irritation
low
Source
natural
A gentle, milk-derived protein that helps form a protective film on skin, but may not suit those with dairy allergies.
Irritation
low
Source
natural