A gentle, oil-soluble derivative of provitamin D3 that may help support skin barrier function, though human evidence is still limited.
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 gentle, oil-soluble derivative of provitamin D3 that may help support skin barrier function, though human evidence is still limited.
Irritation
low
Source
semi-synthetic
A fermented soybean germ filtrate that offers antioxidant benefits and supports skin barrier function, generally well-tolerated and suitable for most skin types.
Irritation
low
Source
biotech
A gentle, fermented ingredient that may help soothe and condition skin, but research is still early.
Irritation
low
Source
biotech
A gentle fermented ingredient that may help protect skin from environmental stress, but research is still early.
Irritation
low
Source
biotech
A gentle, fermented ingredient that may help hydrate and condition skin, but research is still emerging.
Irritation
low
Source
biotech
A synthetic ingredient that may help improve skin texture and tone, but research is still limited compared to more established actives.
Irritation
low
Source
synthetic
Ergosterol is a gentle, yeast-derived sterol that may support skin barrier function and antioxidant defense, but human skincare research is still limited.
Irritation
low
Source
natural
A gentle synthetic ingredient that helps condition the skin, but research on its long-term benefits is still emerging.
Irritation
low
Source
synthetic
A gentle synthetic ingredient that makes skin feel smooth and silky without clogging pores or causing irritation.
Irritation
low
Source
synthetic
Emollient
KLUYVEROMYCES/LACTOBACILLUS/BRASSICA NAPUS SEED OIL FERMENT FILTRATE
A gentle, fermented oil complex that may help strengthen the skin barrier and improve hydration with minimal irritation risk.
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
Antioxidant
BACILLUS/DIMOCARPUS LONGAN FRUIT/SOYBEAN FERMENT FILTRATE
A gentle, fermented botanical complex that may help protect skin from environmental stress and improve hydration, though human research is still limited.
Irritation
low
Source
biotech
Skin conditioner
Saccharomyces/Antler Velvet/Arbutin/Citrus Limon Fruit/Ganoderma Lucidum Stem/Panax Ginseng Root/Pinus Sylvestris Bud/Propagermanium/Royal Jelly/Salmon Egg/Turtle Oil Ferment Extract Filtrate
A complex fermented blend with potential antioxidant benefits, but limited research and possible irritation for sensitive skin.
Irritation
moderate
Source
mixed
Antioxidant
BACILLUS/MONASCUS/PUNICA GRANATUM FRUIT/SOYBEAN FERMENT FILTRATE
A fermented botanical complex that delivers antioxidants and amino acids to support skin health, with low irritation potential.
Irritation
low
Source
biotech
Skin conditioner
BACILLUS/MONASCUS/PUERARIA MIRIFICA ROOT/RICE BRAN FERMENT FILTRATE
A fermented botanical blend that may support skin hydration and antioxidant defense, but research is limited to traditional use and lab studies.
Irritation
low
Source
biotech
Emollient
KLUYVEROMYCES/LACTOBACILLUS/SAFFLOWER SEED OIL FERMENT FILTRATE
A gentle fermented oil that may help strengthen the skin barrier and improve hydration, but research is still early.
Irritation
low
Source
biotech
A gentle, fermented ingredient that helps hydrate and condition skin without irritation, ideal for sensitive and dry skin types.
Irritation
low
Source
biotech
A gentle, mineral-rich extract that may help soothe and condition the skin, but research is still early.
Irritation
low
Source
natural
A synthetic ingredient that helps condition skin and improve product feel, but research on its long-term benefits is still limited.
Irritation
low
Source
synthetic
Humectant
LACTOBACILLUS/HYDROLYZED COLLAGEN FERMENT FILTRATE EXTRACT
A gentle, fermented collagen ingredient that may help hydrate and support the skin barrier, though research is still emerging.
Irritation
low
Source
biotech
Skin conditioning
LACTOBACILLUS/SCHIZOSACCHAROMYCES FERMENT FILTRATE
A gentle, probiotic-derived ferment that helps strengthen the skin barrier and support a healthy microbiome without irritation.
Irritation
low
Source
biotech
Lanthanum Chloride is a rare earth salt that may help calm skin, but it's not well-studied in cosmetics and is used at very low levels.
Irritation
low
Source
synthetic
A fermented milk ingredient that may help protect skin from environmental stress, but research is still early and benefits are not fully proven.
Irritation
low
Source
biotech
A gentle, natural ingredient that may add a subtle glow and skin conditioning benefits, but scientific evidence is limited and mostly traditional.
Irritation
low
Source
natural
Antioxidant
Acetobacter/Aspergillus/Lactobacillus/Leuconostoc/Pediococcus/Saccharomyces/Zygosaccharomyces/Citrus Unshiu Fruit/Citrus Japonica Fruit/Citrus Junos Fruit/Apple Fruit/Banana Fruit/Papaya Fruit/Pyrus Serotina Fruit/Diospyros Kaki Fruit/Watermelon Fruit/Peach Fruit/Prunus Mume Fruit/Fig Fruit/Chaenomeles Sinensis Fruit/Eriobotrya Japonica Fruit/Apricot Fruit/Zizyphus Jujuba Fruit/Cucurbita Maxima Fruit/Castanea Crenata Fruit/Vitis Coignetiae Fruit/Raspberry Fruit/Momordica Grosvenorii Fruit/Lycium Chinense Fruit/Glycine Max Seed/Phaseolus Angularis Seed/Canavalia Ensiformis Seed/Rice Seed/Hordeum Vulgare Seed/Coix Lacryma-Jobi Ma-Yuen Seed/Echinochloa Crus-Galli Seed/Setaria Italica Seed/Millet Seed/Hemerocallis Fulva Flower/Cabbage Leaf/Stem/Morus Bombycis Leaf/Perilla Frutescens Leaf/Ipomoea Batatas Root/Colocasia Antiquorum Tuber/Dioscorea Batatas Rhizome/Iridea Laminarioides/Laminaria Japonica/Nemacystus Decipiens/Undaria Pinnatifida/Radish Root/Turnip Root/Carrot Root/Arctium Lappa Root/Nelumbo Nucifera Rhizome/Onion Bulb/Lilium Auratum Bulb/Licorice Root/Sagittaria Trifolia Root/Sesame Seed/Ginkgo Biloba Seed/Juglans Subcordiformis Fruit/Panax Ginseng Seed/Actinidia Polygama Fruit/Hydnum Erinaceum Fruiting Body/Grifola Frondosa Fruiting Body/Prunus Salicina Fruit/Akebia Quinata Fruit/Crataegus Cuneata Fruit/Cornus Officinalis Fruit/Nephelium Longana Fruit/Houttuynia Cordata/Artemisia Princeps/Sasa Veitchii Leaf/Glechoma Hederacea/Chamomilla Recutita Flower/Equisetum Arvense/Cassia Obtusifolia Seed/Taraxacum Officinale/Isodon Japonicus/Safflower Flower/Plantago Asiatica/Smallanthus Sonchifolius Root/Garlic Bulb/Ginger Rhizome/Beet Rhizome/Polygonum Odoratum Rhizome/Turmeric Rhizome/Acanthopanax Sieboldianus Root/Pinus Koraiensis Seed/Lentinus Edodes Fruiting Body/Auricularia Auricula/Vitis Labrusca Fruit/Helianthus Tuberosus Tuber Ferment Extract
A rich, fermented blend of many plant ingredients that may offer antioxidant and soothing benefits, but its complexity makes it hard to pinpoint exact effects.
Irritation
low
Source
natural
A PEG-modified form of alpha-lipoic acid that offers antioxidant benefits with improved water solubility and stability, but its effectiveness depends on formulation and concentration.
Irritation
low
Source
semi-synthetic
Perfluorotetralin is a synthetic fluorinated liquid that may help deliver oxygen to the skin, but its benefits are still being studied and it is not a mainstream ingredient.
Irritation
low
Source
synthetic
Skin conditioning
BACILLUS/(PINUS DENSIFLORA/PARVIFLORA/THUNBERGII) LEAF/SOYBEAN FERMENT FILTRATE
A gentle, fermented botanical blend that may support skin hydration and antioxidant defense, but research is still emerging.
Irritation
low
Source
biotech
A synthetic skin conditioner that helps products feel smooth and non-greasy, with a low risk of irritation.
Irritation
low
Source
synthetic
Uracil is a gentle, naturally derived skin conditioner with early research suggesting soothing benefits, but it is not yet a well-studied or widely used ingredient.
Irritation
low
Source
natural