A gentle, plant-derived extract with emerging research suggesting antioxidant and soothing benefits, but more studies are needed to confirm its efficacy in skincare.
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-derived extract with emerging research suggesting antioxidant and soothing benefits, but more studies are needed to confirm its efficacy in skincare.
Irritation
low
Source
natural
Repagermanium is a synthetic germanium compound with limited evidence for skin benefits; its use in cosmetics is rare and not well-supported by robust research.
Irritation
low
Source
synthetic
Resacetophenone is a synthetic antioxidant that helps stabilize formulas and protect skin from environmental stress.
Irritation
low
Source
synthetic
A synthetic antioxidant that may help brighten skin and even out tone, but research is still limited compared to more established ingredients.
Irritation
low
Source
synthetic
Resveratrol is a potent antioxidant that helps defend skin from oxidative stress, but its benefits are best supported when combined with other antioxidants and used consistently over time.
Irritation
low
Source
natural
A more stable version of resveratrol that offers antioxidant benefits with less irritation risk.
Irritation
low
Source
semi-synthetic
A stabilized, sugar-bound form of resveratrol that offers antioxidant protection with potentially better skin penetration and less irritation than plain resveratrol.
Irritation
low
Source
semi-synthetic
A stabilized version of resveratrol that may help protect skin from environmental stress, though human studies are still limited.
Irritation
low
Source
semi-synthetic
A more stable, oil-friendly version of resveratrol that helps protect skin from environmental stress without the formulation challenges of plain resveratrol.
Irritation
low
Source
semi-synthetic
A gentle, stabilized version of resveratrol that offers antioxidant protection and helps calm the skin without the stability issues of natural resveratrol.
Irritation
low
Source
semi-synthetic
A potent antioxidant that pairs two well-known plant compounds for better stability and skin protection.
Irritation
low
Source
semi-synthetic
A gentle, water-friendly antioxidant that helps protect skin from environmental stress without the stability issues of plain resveratrol.
Irritation
low
Source
semi-synthetic
A more stable, oil-friendly version of resveratrol that helps defend skin from environmental stress and supports a more even-looking complexion.
Irritation
low
Source
semi-synthetic
A stabilized, oil-soluble form of resveratrol that offers antioxidant protection and anti-aging benefits with better stability and skin penetration than plain resveratrol.
Irritation
low
Source
semi-synthetic
A stabilized, oil-soluble version of resveratrol that offers antioxidant benefits with better skin penetration and less irritation than plain resveratrol.
Irritation
low
Source
semi-synthetic
A milder retinoid that converts to retinol on skin, offering anti-aging benefits with less irritation than pure retinol.
Irritation
low
Source
semi-synthetic
A gentler vitamin A derivative that may offer anti-aging benefits with less irritation than pure retinol, but with less research backing.
Irritation
moderate
Source
semi-synthetic
A gentle plant extract that helps protect skin from environmental stress and may calm irritation, though research is still emerging.
Irritation
low
Source
natural
Rhein is a plant-derived antioxidant with emerging research for soothing and protecting skin, but more human studies are needed to confirm its benefits.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited and its benefits are not well-established.
Irritation
low
Source
natural
A gentle, hydrating microalgae extract that helps skin retain moisture and defends against environmental stress.
Irritation
low
Source
natural
A gentle, lab-grown antioxidant that helps protect skin from environmental stress without irritation.
Irritation
low
Source
biotech
A fermented botanical extract that may help calm skin and defend against environmental stress, though human studies are limited.
Irritation
low
Source
biotech
Rhodiola rosea callus extract is a gentle antioxidant that may help protect skin from environmental stress and support a more resilient complexion.
Irritation
low
Source
natural
Rhodiola rosea root extract is a gentle antioxidant-rich ingredient that may help protect skin from environmental stress and support a calm, even-looking complexion.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical that may help calm skin and defend against environmental stress.
Irritation
low
Source
natural
A gentle, biotech-derived ingredient that may help protect skin from environmental stress and support a healthy barrier.
Irritation
low
Source
biotech
A gentle, antioxidant-rich botanical extract that may help calm and protect skin, but human studies are limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm skin and protect against environmental stress, though human studies are limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help soothe and protect skin, but research is still early.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from alpine rhododendron that may help protect skin from environmental stress and soothe irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich flower extract that may help protect skin from environmental stress, but research is still early.
Irritation
low
Source
natural
Antioxidant
Bacillus/Rhododendron Weyrichii Flower Ferment Extract Filtrate
A gentle, fermented flower extract that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
biotech
A gentle, lab-grown antioxidant from alpine rose that may help protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
biotech
A gentle plant extract with antioxidant potential, though research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural
A gentle, probiotic-derived antioxidant that may help calm skin and support a healthy skin barrier, though research is still emerging.
Irritation
low
Source
biotech
A gentle, biotech-derived ferment that may help calm skin and fight oxidative stress, but human research is still limited.
Irritation
low
Source
biotech
Antioxidant
RHODOPSEUDOMONAS SPHAEROIDES FERMENT FILTRATE
A gentle, probiotic-derived ingredient that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
biotech
A gentle plant extract 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 on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its topical benefits is still limited.
Irritation
low
Source
natural
A gentle plant extract with antioxidant and soothing potential, though research on its cosmetic benefits is still emerging.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
A gentle, plant-based antioxidant extract that helps protect skin from environmental stress and may calm irritation.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant and soothing potential, though research is still early-stage.
Irritation
low
Source
natural
Riberry fruit extract is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress while providing mild hydration and soothing benefits.
Irritation
low
Source
natural
Riboflavin is a gentle antioxidant that may help brighten skin and protect against environmental stress, but it is less studied than other vitamins like C or E.
Irritation
low
Source
natural
A gentle, stabilized form of vitamin B2 that may help protect skin from oxidative stress and support a more even tone, though research is still early.
Irritation
low
Source
semi-synthetic
A fat-soluble form of vitamin B2 that may help protect skin from oxidative stress and support a more even tone, though human studies are limited.
Irritation
low
Source
semi-synthetic
A gentle plant extract that may help protect skin from environmental stress, but research is still early.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from rice that helps nourish and protect the skin without irritation.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
biotech
A gentle, nutrient-rich byproduct of sake brewing that hydrates, soothes, and supports a brighter, more even skin tone.
Irritation
low
Source
natural
A gentle, plant-based ingredient that may help protect skin from environmental stress and support a healthy moisture barrier.
Irritation
low
Source
biotech
Rice germ extract is a gentle, antioxidant-rich ingredient that helps protect and nourish the skin without irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from rice leaves that helps protect skin from environmental stress and supports a calm, even-looking complexion.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help soothe and protect skin, but research is still early.
Irritation
low
Source
natural
A gentle, fermented rice byproduct that may help soothe skin and provide antioxidant benefits, though research is still emerging.
Irritation
low
Source
natural
A gentle fermented ingredient that may help soothe and brighten skin while supporting its natural barrier.
Irritation
low
Source
biotech