A gentle botanical extract with antioxidant and soothing potential, though research is still emerging.
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 botanical extract with antioxidant and soothing potential, though research is still emerging.
Irritation
low
Source
natural
EDTA is a workhorse stabilizer that protects your skincare formulas from metal contamination, helping them stay effective longer.
Irritation
low
Source
synthetic
EDTA salts are safe, widely used stabilizers that help your products stay effective by neutralizing trace metals in water and ingredients.
Irritation
low
Source
synthetic
Eel skin mucus extract is a novel humectant and film-forming ingredient that helps hydrate and temporarily smooth the skin, but research is still early and it may not be suitable for those with fish allergies.
Irritation
low
Source
natural
A stabilized form of green tea's star antioxidant, offering potent protection against environmental damage with improved skin penetration.
Irritation
low
Source
semi-synthetic
Antioxidant
Epigallocatechin Gallate, Biotin, Collagen, Mouse Fibroblast Conditioned Media
A multi-ingredient blend that combines antioxidant EGCG with biotin and collagen, plus mouse fibroblast conditioned media; promising but with limited human data and ethical considerations.
Irritation
low
Source
mixed
Egg provides protein and moisture to skin and hair, but its texture and potential allergenicity make it a niche ingredient best suited for rinse-off treatments.
Irritation
low
Source
natural
Egg extract is a natural ingredient that can temporarily smooth and soften skin, but its benefits are mostly anecdotal and it may cause allergic reactions in some people.
Irritation
low
Source
natural
Egg oil is a natural emollient rich in fatty acids and lecithin, offering moisturizing benefits but with moderate comedogenic potential for acne-prone skin.
Irritation
low
Source
natural
Egg powder can temporarily tighten and smooth skin, but it is not a long-term solution for firmness or hydration.
Irritation
low
Source
natural
A natural film-forming ingredient that helps smooth the skin's surface and lock in moisture, but research is still emerging.
Irritation
low
Source
natural
Egg shell membrane powder is a natural source of collagen and elastin that may help support skin firmness and hydration, but research is still emerging.
Irritation
low
Source
natural
Egg white can temporarily tighten skin and absorb excess oil, but its effects are short-lived and it may not suit sensitive or dry skin.
Irritation
low
Source
natural
Egg Yolk Extract is a gentle, nutrient-packed ingredient that helps moisturize and condition skin, but it may not suit those with egg allergies.
Irritation
low
Source
natural
Egg yolk powder is a natural moisturizer rich in lipids and proteins, but may be comedogenic for some skin types.
Irritation
low
Source
natural
Eggplant Fruit Extract is a gentle, antioxidant-rich botanical that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
Eggplant fruit juice is a gentle, antioxidant-rich ingredient that may help soothe and protect skin, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
Eggplant Fruit Powder is a gentle, antioxidant-rich botanical ingredient that may help soothe skin and provide mild exfoliation, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
Eggplant Root Extract is a gentle, antioxidant-rich botanical that may help calm skin and fight free radical damage, though research is still early.
Irritation
low
Source
natural
A natural source of skin-supporting proteins, but research on cosmetic benefits is still limited.
Irritation
low
Source
natural
A natural film-forming ingredient that may temporarily smooth skin and support moisture retention, but research is still early.
Irritation
low
Source
natural
Eggshell powder is a natural, gritty ingredient used for gentle physical exfoliation, but its particle size and sharpness can vary, so it may be irritating for sensitive skin.
Irritation
moderate
Source
natural
A synthetic peptide that mimics scorpion venom to temporarily relax facial muscles, offering a milder alternative to neurotoxin injections for smoothing expression lines.
Irritation
low
Source
synthetic
Eicosane is a safe, lightweight emollient that helps products spread smoothly without feeling greasy.
Irritation
low
Source
synthetic
EPA is a marine-derived omega-3 that helps calm redness, support the skin barrier, and protect against environmental stress.
Irritation
low
Source
natural
Eicosatrienoic Acid is a gentle fatty acid that helps reinforce the skin barrier and improve moisture retention, though research on its cosmetic benefits is still emerging.
Irritation
low
Source
natural
Eijitsu is a gentle botanical extract with emerging antioxidant and soothing benefits, but scientific evidence is limited.
Irritation
low
Source
natural
Eijitsu Ekisu is a gentle, antioxidant-rich extract from Japanese apricot that may help soothe skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, hydrating water from einkorn wheat stems that may help soothe and moisturize skin, but research is limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from an ancient wheat that may help soothe and protect skin, but research is still early.
Irritation
low
Source
natural
A gentle seaweed extract that provides antioxidant protection and soothing hydration, ideal for sensitive or irritated skin.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its skincare benefits is still limited.
Irritation
low
Source
natural
A synthetic peptide that may help improve skin firmness and reduce fine lines, but more human studies are needed to confirm its effectiveness.
Irritation
low
Source
synthetic
Elastin is a natural protein that helps skin stay firm and bouncy, but its large molecule size limits deep penetration when applied topically.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm skin and defend against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm skin and defend against environmental stress, though human studies are limited.
Irritation
low
Source
natural
A gentle, lab-grown plant extract that may help protect skin from environmental stress and calm irritation.
Irritation
low
Source
biotech
Elderberry extract is a gentle antioxidant-rich botanical that may help calm skin and defend against environmental stress.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that may help protect skin from environmental stress, but research specific to topical use is still emerging.
Irritation
low
Source
natural
Elderberry fruit juice is a gentle, antioxidant-rich ingredient that helps soothe and protect skin from environmental stress.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help calm skin and fight free radical damage, but research on its specific benefits is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich oil that hydrates and helps protect skin from environmental stress, though research on its specific benefits is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived wax that adds richness and a smooth feel to balms and creams without clogging pores.
Irritation
low
Source
natural
Elderflower juice is a gentle, antioxidant-rich botanical water that soothes and hydrates skin, making it a great choice for sensitive or irritated complexions.
Irritation
low
Source
natural
Elderflower water is a gentle, fragrant hydrosol that can help soothe and lightly tone the skin without stripping moisture.
Irritation
low
Source
natural
A gentle plant extract with promising antioxidant and soothing potential, but human skincare research is very limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract from a rare Eleutherococcus species, showing early promise for soothing and protecting skin.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research in skincare is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm stressed skin and support a healthy-looking complexion.
Irritation
low
Source
natural
Skin Conditioning
Lactobacillus/Eleuthero Root Extract Ferment Filtrate
A fermented root extract that soothes and defends skin with antioxidants, but its benefits depend on the fermentation process and overall formula.
Irritation
low
Source
biotech
Elguea Clay is a gentle, mineral-rich clay that helps absorb excess oil and impurities without over-drying, making it a good option for normal to combination skin.
Irritation
low
Source
natural
A novel, biotech-derived ingredient with limited human research; may support skin repair but lacks robust clinical evidence.
Irritation
low
Source
biotech
Ellagic acid is a gentle antioxidant that helps brighten skin and protect against environmental damage, but it is less studied than vitamin C.
Irritation
low
Source
natural
Elm bark extract is a gentle, plant-based ingredient that may help calm irritated skin and support the skin barrier, though research is still emerging.
Irritation
low
Source
natural
A gentle mushroom-derived extract with antioxidant potential, but research in human skin is still limited.
Irritation
low
Source
biotech
A gentle botanical extract with antioxidant potential, but research is limited and it's not a proven powerhouse ingredient.
Irritation
low
Source
natural
A traditional botanical extract with antioxidant potential, but limited modern research on its effectiveness in skincare.
Irritation
low
Source
natural
A traditional botanical extract with promising antioxidant and antimicrobial activity, but more human skincare studies are needed to confirm its benefits.
Irritation
low
Source
natural
A traditional root powder with promising antimicrobial and antioxidant activity, but limited modern safety data for cosmetic use.
Irritation
moderate
Source
natural
A potent antioxidant fruit powder that helps brighten skin and fight environmental damage, but its effectiveness depends on formulation and concentration.
Irritation
low
Source
natural