A synthetic antioxidant that helps keep skincare products fresh and may offer mild skin-protective benefits.
Irritation
low
Source
semi-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 synthetic antioxidant that helps keep skincare products fresh and may offer mild skin-protective benefits.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C derivative that brightens skin and fights free radicals without the irritation of pure ascorbic acid.
Irritation
low
Source
semi-synthetic
A synthetic antioxidant that helps brighten skin and protect against environmental damage, with low irritation potential.
Irritation
low
Source
synthetic
Eucalyptus leaf extract can help calm acne and refresh skin, but its potent essential oil components may irritate sensitive skin.
Irritation
moderate
Source
natural
A gentle, lab-grown plant cell extract that may help protect skin from environmental stress, but research is still early.
Irritation
low
Source
biotech
A gentle plant extract with antioxidant potential, but human skin research is still limited.
Irritation
low
Source
natural
Eugenyl Glucoside is a gentle, water-soluble antioxidant that helps protect skin from environmental stress while being far less irritating than its parent compound, eugenol.
Irritation
low
Source
semi-synthetic
A gentle, antioxidant-rich ferment from microalgae that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
biotech
A gentle botanical extract with antioxidant potential, but research is limited and benefits are not yet well-established in human skin.
Irritation
low
Source
natural
A gentle, biotech-derived antioxidant that may help protect skin from environmental stress and support a more even tone.
Irritation
low
Source
biotech
A gentle plant extract with antioxidant potential, but research is limited and it may cause sensitivity in some individuals.
Irritation
low
Source
natural
A gentle, plant-based extract that may help calm skin and fight free radicals, but research is still limited.
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
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
A gentle, antioxidant-rich microalgae ingredient that may help calm skin and defend against environmental stress.
Irritation
low
Source
biotech
A gentle, plant-based extract that helps calm skin and defend against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A mild, plant-based extract that helps calm skin and fight free radical damage, but research is still early.
Irritation
low
Source
natural
A gentle, plant-derived antioxidant that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
biotech
A gentle, plant-based extract that helps calm irritation and defend against environmental stress, ideal for sensitive or dry skin.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract that may help protect skin from environmental stress, but research is still early.
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
A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet well-established.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited and it's not a standout ingredient.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is limited and benefits are not yet proven in human skin.
Irritation
low
Source
natural
A gentle fern extract with antioxidant potential, but research is still early and benefits are not yet proven in human studies.
Irritation
low
Source
natural
A gentle, lab-grown fennel extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
Fennel fruit extract is a gentle botanical antioxidant that may help calm skin and fight free radical damage, but research is limited and it's not a star ingredient.
Irritation
low
Source
natural
A gentle, plant-based powder that may help calm skin and fight free radicals, but research is limited.
Irritation
low
Source
natural
Fenugreek Fruit Extract is a gentle, antioxidant-rich botanical that may help soothe skin and protect against environmental stress, but research on topical use is still emerging.
Irritation
low
Source
natural
Antioxidant
LACTOBACILLUS/SACCHAROMYCES/EUTERPE OLERACEA FRUIT EXTRACT FERMENT FILTRATE
A gentle, fermented antioxidant extract that may help protect skin from environmental stress while supporting a healthy-looking complexion.
Irritation
low
Source
biotech
Exfoliant
LACTOBACILLUS/PHASEOLUS ANGULARIS SEED EXTRACT FERMENT EXTRACT FILTRATE
A gentle fermented bean extract that may help soften and brighten skin without harsh chemicals.
Irritation
low
Source
biotech
Antioxidant
BACILLUS/APHANIZOMENON FLOS-AQUAE/SOYBEAN FERMENT FILTRATE
A gentle, fermented blend that may help calm skin and defend against environmental stress, though research is still emerging.
Irritation
low
Source
biotech
Humectant
LEUCONOSTOC/ALOE BARBADENSIS LEAF/SORBUS AUCUPARIA FRUIT FERMENT FILTRATE
A gentle fermented blend that may help hydrate and soothe skin while providing antioxidant benefits, though research is still emerging.
Irritation
low
Source
biotech
Antioxidant
ASPERGILLUS/AMARANTHUS HYPOCHONDRIACUS SEED FERMENT FILTRATE
A gentle, fermented botanical extract that may help calm skin and fight free radical damage, though research is still early.
Irritation
low
Source
biotech
A fermented botanical extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
Antioxidant
Saccharomyces/Acanthopanax Sessiliflorus Extract Ferment Filtrate
A gentle fermented botanical extract that may help calm irritation and protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
biotech
Antioxidant
ASPERGILLUS/ASTRAGALUS SINICUS SEED/RICE FERMENT FILTRATE
A gentle fermented ingredient that may help soothe skin and provide antioxidant benefits, though research is still emerging.
Irritation
low
Source
biotech
Antioxidant
LACTOBACILLUS/SACCHAROMYCES/ASTRAGALUS MEMBRANACEUS ROOT EXTRACT FERMENT FILTRATE
A fermented root extract that may help calm skin and defend against environmental stress, though human studies are limited.
Irritation
low
Source
biotech
Antioxidant
LACTOBACILLUS/SASA QUELPAERTENSIS LEAF/STEM EXTRACT FERMENT FILTRATE
A gentle, fermented bamboo extract that may help calm irritation and support hydration, though research is still early.
Irritation
low
Source
biotech
A fermented ingredient that may help soothe and protect skin, but research is still emerging and it's not a proven miracle worker.
Irritation
low
Source
biotech
Antioxidant
(CAMELLIA JAPONICA/PRUNUS MUME/SAFFLOWER FLOWER)/(ARONIA ARBUTIFOLIA/BLUEBERRY/CRANBERRY/EUTERPE OLERACEA FRUIT)/CAMELLIA SINENSIS LEAF/GARCINIA MANGOSTANA PEEL/COFFEE SEED/PROPOLIS/WINE EXTRACT
A complex blend of fermented botanicals that may help protect skin from environmental stress and calm irritation, though individual ingredient concentrations are unknown.
Irritation
low
Source
natural
Antioxidant
Lactobacillus/Saccharomyces/Blueberry/Rice/Soybean/Vaccinium Myrtillus Extract Ferment Filtrate
A fermented botanical complex that provides antioxidant benefits and gentle enzymatic exfoliation, ideal for dull or uneven skin.
Irritation
low
Source
biotech
A fermented birch juice ingredient that may help soothe and protect skin, but research is still early.
Irritation
low
Source
biotech
A fermented algae extract that may help calm skin and fight environmental stress, but research is still early.
Irritation
low
Source
biotech
Antioxidant
BACILLUS/MONASCUS/BORAGO OFFICINALIS SEED/SOYBEAN FERMENT FILTRATE
A gentle, antioxidant-rich ferment that may help soothe and condition skin, but research is still emerging.
Irritation
low
Source
biotech
Antioxidant
LACTOBACILLUS/(CINNAMOMUM CASSIA/MAGNOLIA) BARK/(ALPINIA OFFICINARUM/ANGELICA GIGAS) ROOT FERMENT EXTRACT FILTRATE
A fermented botanical blend that may offer antioxidant and soothing benefits, but research is limited to traditional use and lab studies.
Irritation
low
Source
biotech
Antioxidant
STREPTOMYCES SUBRUTILUS/APRICOT FLOWER EXTRACT/LITHOSPERMUM OFFICINALE ROOT EXTRACT/MAGNOLIA OFFICINALIS FLOWER EXTRACT/SPIRODELA POLYRHIZA EXTRACT FERMENT FILTRATE
A fermented blend of bacteria and plant extracts that may offer antioxidant and soothing benefits, but research is limited and mostly based on individual ingredients.
Irritation
low
Source
biotech
Antioxidant
STREPTOCOCCUS THERMOPHILUS/ANGELICA GIGAS ROOT/CIMICIFUGA RACEMOSA ROOT/PUERARIA LOBATA ROOT/PUNICA GRANATUM FRUIT/SCHISANDRA CHINENSIS FRUIT EXTRACT FERMENT FILTRATE
A fermented blend of roots and fruits that may offer antioxidant and soothing benefits, but research is limited to the individual ingredients rather than this specific complex.
Irritation
low
Source
biotech
A gentle, fermented broccoli extract that may help calm and protect skin with antioxidants, though research is still emerging.
Irritation
low
Source
biotech
Antioxidant
BACILLUS/CAMELLIA JAPONICA SEED/SOYBEAN FERMENT EXTRACT
A gentle, fermented botanical extract that may help calm skin and defend against environmental stress, though direct human studies are limited.
Irritation
low
Source
biotech
Soothing Agent
KLUYVEROMYCES/LACTOBACILLUS/CINNAMOMUM CAMPHORA BARK OIL FERMENT FILTRATE
A fermented botanical complex that may offer antioxidant and soothing benefits, but evidence is limited and it can be irritating for sensitive skin.
Irritation
moderate
Source
biotech
A fermented root extract that may help calm skin and fight oxidative stress, but research is still early.
Irritation
low
Source
biotech
Antioxidant
Saccharomyces/Prunus Yedoensis Bark Extract Ferment Filtrate
A gentle, fermented botanical extract that may help protect skin from environmental stress and support a healthy-looking complexion.
Irritation
low
Source
biotech
Skin conditioning
Bacillus/Monascus/Prunus Tomentosa Fruit/Soybean Ferment Filtrate
A gentle, fermented botanical blend that may help soothe and condition skin, but research is still early.
Irritation
low
Source
biotech
A gentle, antioxidant-rich fermented extract that may help soothe and protect skin while supporting a healthy microbiome.
Irritation
low
Source
biotech
A gentle fermented extract that may offer antioxidant benefits, but research is still early and it's not a proven powerhouse ingredient.
Irritation
low
Source
biotech
Antioxidant
LACTOBACILLUS/(CITRUS JUNOS/PRUNUS MUME/PUNICA GRANATUM) FRUIT FERMENT FILTRATE
A gentle fermented fruit blend that may help soothe and brighten skin, but research is still emerging.
Irritation
low
Source
biotech
Antioxidant
KAZACHSTANIA/CITRUS JUNOS FRUIT EXTRACT FERMENT FILTRATE
A fermented botanical extract that may offer antioxidant benefits, but research on this specific blend is limited.
Irritation
low
Source
natural
Antioxidant
Saccharomyces/Lactobacillus/Mandarin Orange Peel/Phellinus Linteus/Pinus Densiflora Leaf Ferment Filtrate
A fermented botanical blend that may help calm skin and provide antioxidant support, but human research is still limited.
Irritation
low
Source
biotech