A natural wood extract with antioxidant potential, but research is limited and it's not a standout ingredient in most formulations.
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 natural wood extract with antioxidant potential, but research is limited and it's not a standout ingredient in most formulations.
Irritation
low
Source
natural
A safe, plant-derived green colorant that adds a natural-looking tint to products without known skin irritation.
Irritation
low
Source
semi-synthetic
Chloroplatinic acid is a rare, high-cost ingredient with theoretical antioxidant benefits, but its use in skincare is experimental and carries significant irritation and sensitization risks.
Irritation
high
Source
synthetic
A gentle cousin of salicylic acid that may help with mild acne and surface exfoliation, but research is still limited.
Irritation
moderate
Source
synthetic
Chlorothymol is a synthetic preservative with mild antimicrobial power, but it can be irritating for sensitive skin at higher levels.
Irritation
moderate
Source
synthetic
Chloroxylenol is an effective preservative that helps keep products safe from bacteria and fungi, but it can be irritating for some people, especially at higher concentrations.
Irritation
moderate
Source
synthetic
Chlorphenesin is a widely used synthetic preservative that helps keep your skincare products fresh and safe from contamination.
Irritation
low
Source
synthetic
A biotech ingredient with promising but limited research; may support skin repair but is not a proven anti-aging powerhouse.
Irritation
low
Source
biotech
A PEG-modified form of vitamin D3 that may support skin barrier function, but research is limited and the ingredient is uncommon in mainstream products.
Irritation
low
Source
semi-synthetic
Cholesterol is a skin-identical lipid that strengthens the moisture barrier and soothes dryness without clogging pores.
Irritation
low
Source
natural
A cholesterol-based emollient that helps restore the skin barrier, making it ideal for dry or compromised skin without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle film-former that helps lock in moisture and improve product feel without clogging pores.
Irritation
low
Source
semi-synthetic
A skin-friendly ester blend that mimics natural lipids to strengthen the skin barrier and lock in moisture.
Irritation
low
Source
semi-synthetic
Cholesteryl Acetate is a gentle, cholesterol-based emollient that supports the skin barrier and helps lock in moisture without clogging pores.
Irritation
low
Source
semi-synthetic
Cholesteryl butyrate is a gentle, barrier-supporting lipid that may help calm and moisturize skin, but research is still early.
Irritation
low
Source
semi-synthetic
A gentle, cholesterol-based emollient that helps reinforce the skin barrier and improve moisture retention without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle conditioning ingredient that helps smooth hair and soften skin, but is less common than other cholesterol derivatives.
Irritation
low
Source
semi-synthetic
A synthetic cholesterol relative that helps creams feel smooth and stable, but research on its specific benefits is still limited.
Irritation
low
Source
synthetic
A gentle, skin-friendly lipid that supports the skin barrier and locks in moisture without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle film-forming ingredient that helps lock in moisture and smooth the skin’s surface without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, cholesterol-based emollient that mimics the skin's natural lipids to support barrier function without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, cholesterol-based emollient that helps reinforce the skin barrier without clogging pores, making it suitable for most skin types.
Irritation
low
Source
semi-synthetic
A gentle, non-greasy emollient that improves product feel and skin softness, with a low risk of irritation or clogged pores.
Irritation
low
Source
synthetic
A gentle, lanolin-derived emollient that helps restore the skin barrier and lock in moisture, but may be too rich for oily or acne-prone skin.
Irritation
low
Source
natural
A gentle, cholesterol-based emollient that mimics the skin's natural lipids to improve softness and barrier function without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, cholesterol-based emollient that helps reinforce the skin barrier without clogging pores.
Irritation
low
Source
semi-synthetic
Cholesteryl Oleate is a skin-friendly lipid that helps reinforce the skin barrier and soften the skin without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, biomimetic lipid that supports the skin barrier without clogging pores.
Irritation
low
Source
semi-synthetic
Cholesteryl Stearate is a gentle emollient that mimics the skin's natural lipids to support barrier function without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle cholesterol-based ingredient that helps reinforce the skin's natural barrier and lock in moisture.
Irritation
low
Source
semi-synthetic
Skin Conditioner
CHOLESTERYL/BEHENYL/OCTYLDODECYL LAUROYL GLUTAMATE
A gentle, multi-chain ester that helps soften skin and improve product texture without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, cholesterol-based emollient that helps reinforce the skin barrier without clogging pores.
Irritation
low
Source
semi-synthetic
Choleth-10 is a mild, cholesterol-based emulsifier that helps create stable, creamy formulas while also supporting the skin's natural barrier.
Irritation
low
Source
semi-synthetic
Choleth-15 is a gentle emulsifier that helps blend water and oil in skincare, but it's rarely used alone and is best understood as a formulation helper.
Irritation
low
Source
semi-synthetic
Choleth-20 is a mild, cholesterol-based emulsifier that helps blend water and oil in creams and lotions without significant irritation or clogging concerns.
Irritation
low
Source
semi-synthetic
Choleth-24 is a mild, cholesterol-based emulsifier that helps blend water and oil in creams and lotions, with a low risk of irritation.
Irritation
low
Source
semi-synthetic
Choleth-30 is a mild, cholesterol-based emulsifier that helps blend oil and water in skincare products while leaving a smooth, non-greasy feel.
Irritation
low
Source
semi-synthetic
Choleth-5 is a mild emulsifier that helps oil and water mix in your skincare products, with a low risk of irritation.
Irritation
low
Source
semi-synthetic
A gentle seaweed powder that helps calm and hydrate skin, but research on its specific benefits is still limited.
Irritation
low
Source
natural
A gentle marine extract that helps hydrate and protect the skin, but research is still early.
Irritation
low
Source
natural
A gentle, hydrating seaweed extract that helps soothe and moisturize the skin without clogging pores.
Irritation
low
Source
natural
A gentle botanical root extract with antioxidant potential, but research on its skincare benefits is still emerging.
Irritation
low
Source
natural
A safe, opaque green pigment used in color cosmetics; generally well-tolerated but best avoided on broken or irritated skin.
Irritation
low
Source
synthetic
A safe, FDA-approved green pigment that adds color without common irritation or clogging pores.
Irritation
low
Source
synthetic
A safe, stable green pigment widely used in color cosmetics, but avoid inhaling loose powder forms.
Irritation
low
Source
synthetic
A gentle, algae-derived antioxidant that may help calm skin and fight free radicals, but research is still early.
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
Chrysanthal is a gentle, plant-derived ingredient that may help calm redness and protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle plant extract that helps protect skin from environmental stress and may reduce puffiness around the eyes.
Irritation
low
Source
natural
A mild, antioxidant-rich floral water that can soothe and protect skin, but research on its specific benefits is still limited.
Irritation
low
Source
natural
A gentle botanical blend that may help calm skin and provide antioxidant support, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its skincare benefits is still emerging.
Irritation
low
Source
natural
A fragrant flower oil with antioxidant potential, best suited for calming scents in skincare but may irritate sensitive skin.
Irritation
moderate
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited—best used as a supporting ingredient in soothing formulas.
Irritation
low
Source
natural
A gentle botanical extract with potential soothing and antioxidant benefits, but research is limited and it may cause sensitivity in those allergic to daisy-family plants.
Irritation
low
Source
natural
A gentle, antioxidant-rich flower extract that may help calm skin and fight free radical damage, but research is still emerging.
Irritation
low
Source
natural
A gentle, lab-grown antioxidant that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
A gentle botanical extract that may help calm skin and fight free radical damage, but research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich flower extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural