A gentle botanical extract with antioxidant and soothing potential, but research on its cosmetic benefits is still limited.
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, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
Alluvial mud is a gentle, mineral-rich sediment that can help absorb excess oil and lightly exfoliate skin, but its benefits are mostly anecdotal.
Irritation
low
Source
natural
A synthetic fragrance compound that adds scent but offers no skincare benefit; may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ingredient that adds scent but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Allyl Butyrate is a synthetic fragrance ingredient that adds a fruity, pineapple-like scent to products, but it offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Allyl Caproate is a synthetic fragrance ingredient that adds a fruity, pineapple-like scent to products, but it offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Allyl Cinnamate is a synthetic fragrance ingredient that adds a sweet, balsamic scent but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic scent ingredient that adds a fruity note to products; generally safe at low levels but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ingredient that adds a fruity scent but offers no skincare benefits and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
A synthetic scent ingredient that adds a pleasant fruity note but offers no skincare benefit and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Allyl heptanoate is a synthetic fragrance ingredient that adds a fruity, pineapple-like scent to products, but it offers no skincare benefits and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
A synthetic fragrance compound that adds a violet note to products but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Allyl Isovalerate is a synthetic fragrance ingredient that adds a fruity, apple-like scent to products; it is generally considered safe at low concentrations but offers no skincare benefits.
Irritation
low
Source
synthetic
Texture Enhancer
ALLYL METHACRYLATE/GLYCOL DIMETHACRYATE CROSSPOLYMER
A synthetic powder that helps control shine and gives a silky feel, but offers no active skincare benefits.
Irritation
low
Source
synthetic
A synthetic polymer that helps products spread smoothly and feel silky, with a low risk of irritation.
Irritation
low
Source
synthetic
Allyl Nonanoate is a synthetic fragrance ingredient that adds a fruity, pineapple-like scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ester that adds a fruity scent to products but offers no skin benefit and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Allyl phenethyl ether is a synthetic fragrance compound that adds a sweet floral note to products, but it may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Allyl phenoxyacetate is a synthetic fragrance ingredient that adds a sweet, fruity note to products but offers no skincare benefits and may be a concern for those with fragrance sensitivities.
Irritation
low
Source
synthetic
Allyl Phenylacetate is a synthetic fragrance compound that adds a sweet, honey-like scent to products, but it offers no skincare benefits and may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Allyl Propionate is a synthetic fragrance ingredient that adds a fruity note to products; it is generally considered safe at low concentrations but offers no skin benefit beyond scent.
Irritation
low
Source
synthetic
A synthetic film-former that helps makeup and sunscreen stay put longer, especially in water or sweat.
Irritation
low
Source
synthetic
Allyl Trimethylhexanoate is a synthetic fragrance ingredient that adds a fruity, floral scent to products, but offers no skincare benefits.
Irritation
low
Source
synthetic
Allylanisole adds a sweet, licorice-like scent to products but can be a skin sensitizer for some people.
Irritation
moderate
Source
natural
A synthetic fragrance ingredient that adds a warm, spicy scent but may cause irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
A nourishing blend of plant-derived fatty acids that softens and smooths skin with a low risk of irritation.
Irritation
low
Source
natural
Almond Kernel Extract is a gentle, plant-based ingredient that helps soothe and condition the skin, making it a good fit for sensitive and dry skin types.
Irritation
low
Source
natural
A gentle, semi-synthetic ingredient that combines the moisturizing benefits of almond oil with improved water solubility for stable, non-greasy formulas.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic emollient that helps products spread smoothly and leaves skin feeling soft without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, PEG-modified almond oil that helps products spread smoothly and feel silky without clogging pores.
Irritation
low
Source
semi-synthetic
A mild, eco-friendly emulsifier that helps blend oil and water in skincare products while leaving skin feeling soft.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic emollient that helps soften skin without feeling overly greasy, suitable for most skin types.
Irritation
low
Source
semi-synthetic
A gentle, natural exfoliant that buffs away dead skin cells without harsh microplastics, but may feel too gritty for sensitive skin.
Irritation
low
Source
natural
Almondamide DEA helps create rich lather and thicker textures, but it is a semi-synthetic ingredient with moderate irritation potential for sensitive skin.
Irritation
moderate
Source
semi-synthetic
A gentle conditioning agent derived from almond oil that helps reduce static and improve manageability, but may cause mild irritation in sensitive individuals.
Irritation
moderate
Source
semi-synthetic
A gentle, almond-derived surfactant that cleanses without stripping the skin, making it a solid choice for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
A gentle conditioning ingredient that helps soften hair and reduce static without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, almond-derived surfactant that helps create a rich lather without stripping the skin, making it a good choice for sensitive skin.
Irritation
low
Source
semi-synthetic
A gentle antioxidant extract from alder fruit that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle, plant-based powder that soothes and hydrates skin, similar to Aloe vera but with a slightly different nutrient profile.
Irritation
low
Source
natural
A sustainable, lab-grown aloe extract that soothes skin and fights free radicals without the variability of traditional aloe.
Irritation
low
Source
biotech
A lab-grown aloe extract that offers concentrated antioxidants and soothing benefits with minimal irritation risk.
Irritation
low
Source
biotech
A gentle, plant-based powder that soothes and protects skin, but its benefits are less studied than traditional aloe leaf juice.
Irritation
low
Source
natural
A gentle, probiotic-fermented aloe ingredient that soothes and conditions skin without irritation.
Irritation
low
Source
biotech
Soothing Agent
Aloe Arborescens Leaf Extract, Pinus Densiflora Leaf Extract, Saccharomyces Ferment
A gentle fermented botanical blend that may help calm skin and provide antioxidant support, though research is limited.
Irritation
low
Source
natural
Aloe Ferox Leaf Juice is a gentle, hydrating ingredient that soothes and moisturizes skin, with a slightly richer nutrient profile than common Aloe Vera.
Irritation
low
Source
natural
A soothing, hydrating botanical extract with antioxidant benefits, generally safe and well-tolerated for most skin types.
Irritation
low
Source
natural
A gentle, plant-derived powder that helps calm and hydrate skin, but is less studied than its cousin Aloe barbadensis (common aloe vera).
Irritation
low
Source
natural
Aloe Maculata Leaf Extract is a gentle, soothing botanical that helps calm irritated skin and provides light hydration, but it is less researched than classic Aloe vera.
Irritation
low
Source
natural
A gentle, plant-derived ingredient that may help calm irritation and support skin's natural repair processes, though human studies are limited.
Irritation
low
Source
natural
Aloe polysaccharides are gentle, hydrating molecules that help calm irritation and support the skin's moisture barrier.
Irritation
low
Source
natural
Aloe resin is a natural, soothing ingredient that may help calm irritated skin, but research on its specific benefits is still emerging.
Irritation
low
Source
natural
Aloe sprout extract is a gentle, antioxidant-rich ingredient that hydrates and soothes skin, but research on its specific benefits is still emerging.
Irritation
low
Source
natural
Aloe vera is a gentle, hydrating ingredient that can help calm irritated skin, but its benefits are often overstated in marketing.
Irritation
low
Source
natural
A gentle, lab-grown aloe extract that soothes and hydrates without the variability of traditional aloe.
Irritation
low
Source
biotech
Aloe vera leaf extract is a gentle, water-based humectant that hydrates and soothes the skin, making it a staple in calming and moisturizing products.
Irritation
low
Source
natural
A gentle, water-soluble powder that soothes and hydrates skin, ideal for sensitive or irritated complexions.
Irritation
low
Source
natural
A gentle, plant-based powder that soothes and hydrates skin, but its benefits depend heavily on processing and formulation.
Irritation
low
Source
natural
Aloesin is a gentle, plant-derived brightener that can help fade dark spots without the irritation of stronger alternatives.
Irritation
low
Source
natural
Alpha hydroxy acids are effective exfoliants that smooth skin texture and boost radiance, but require careful use to avoid irritation.
Irritation
moderate
Source
natural