A biotech humectant that helps skin hold onto moisture, with a lower molecular weight for deeper penetration than standard hyaluronic acid.
Irritation
low
Source
biotech
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 biotech humectant that helps skin hold onto moisture, with a lower molecular weight for deeper penetration than standard hyaluronic acid.
Irritation
low
Source
biotech
A gentle, plant-based antioxidant that helps protect skin from environmental stress while offering mild soothing benefits.
Irritation
low
Source
natural
A gentle, plant-based antioxidant powder that may help calm skin and fight environmental stress, but research is still early.
Irritation
low
Source
natural
A mushroom-derived oil with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A plant-based antioxidant extract that may help brighten skin and fight free radical damage, but research is still early.
Irritation
low
Source
natural
Arunika Ekisu is a gentle botanical extract with antioxidant potential, but scientific evidence is limited and its exact plant source is unclear.
Irritation
low
Source
natural
Asafoetida gum oil may offer antimicrobial benefits, but its strong scent and potential for skin irritation limit its use in mainstream skincare.
Irritation
moderate
Source
natural
A traditional botanical extract with antioxidant potential, but limited modern skincare research.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant and soothing potential, but research is limited and it may cause sensitivity in rare cases.
Irritation
low
Source
natural
A gentle botanical root extract with antioxidant and soothing potential, but human skincare research is limited.
Irritation
low
Source
natural
A gentle, water-based botanical extract with potential soothing and antioxidant benefits, but research is limited.
Irritation
low
Source
natural
A gentle seaweed powder that hydrates, soothes, and provides antioxidant protection, ideal for sensitive or dry skin.
Irritation
low
Source
natural
A well-researched antioxidant that brightens skin and supports collagen, but can be unstable and irritating at high concentrations.
Irritation
moderate
Source
natural
A gentle, stabilized vitamin C peptide that may brighten and support collagen, but research is still early.
Irritation
low
Source
semi-synthetic
A gentle, silicone-bound vitamin C that offers antioxidant protection and brightening benefits with less sting than pure ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentler, more stable cousin of pure vitamin C that offers antioxidant benefits with less irritation, but may be less potent for brightening.
Irritation
low
Source
semi-synthetic
A gentle, stable form of vitamin C that brightens skin and fights free radicals without the irritation of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C derivative that also delivers hyaluronic acid's moisture-binding power, ideal for brightening and hydrating without irritation.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C derivative that brightens skin and fights free radicals without the irritation of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stabilized vitamin C derivative that brightens skin and fights free radicals with less sting than pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, oil-soluble vitamin C derivative that offers antioxidant protection and may support skin brightening, though it is less studied than ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, oil-soluble vitamin C derivative that may offer antioxidant and mild UV protection, but research is still early compared to L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stabilized vitamin C derivative that offers antioxidant protection and brightening benefits with less irritation than pure ascorbic acid.
Irritation
low
Source
semi-synthetic
A stable, oil-friendly vitamin C derivative that may offer antioxidant and brightening benefits with less irritation than pure L-ascorbic acid, though research is still emerging.
Irritation
low
Source
semi-synthetic
A stable, oil-soluble vitamin C derivative that offers antioxidant protection and brightening benefits with less irritation than pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stabilized vitamin C peptide that may help brighten and firm skin with less irritation than pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C derivative fused with hyaluronic acid that brightens and hydrates without the sting of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle hybrid of vitamin C and retinol that aims to brighten and smooth skin with less irritation than traditional retinol.
Irritation
low
Source
semi-synthetic
A gentle, oil-soluble vitamin C that brightens skin and fights free radicals without the sting of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A gentle, stable vitamin C that brightens skin and fights free radicals without the sting or short shelf life of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A stable, dual-antioxidant ingredient that pairs vitamins C and E in one molecule for gentle environmental protection.
Irritation
low
Source
semi-synthetic
A gentle bark extract with antioxidant and soothing potential, though human studies are limited.
Irritation
low
Source
natural
A gentle botanical extract that may help calm skin and fight free radical damage, but research is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich leaf extract that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle plant extract that may help calm skin and fight free radicals, but research is still early.
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, antioxidant-rich extract from Asian pear callus cells that may help soothe skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that helps soothe and protect the skin from environmental stress.
Irritation
low
Source
natural
Asian pear fruit juice is a gentle, water-like ingredient that adds light hydration and a touch of antioxidant protection, but it's not a powerhouse active.
Irritation
low
Source
natural
Asian pear juice is a gentle, hydrating ingredient that adds a touch of natural antioxidant power to skincare, but its benefits are backed by limited direct research.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from Asian pear peels that may help calm skin and protect against environmental stress.
Irritation
low
Source
natural
A gentle botanical extract with potential soothing and antioxidant benefits, but research is still emerging.
Irritation
low
Source
natural
Asiatic acid is a gentle, plant-derived antioxidant that helps calm skin and support collagen, but it's not a quick-fix for deep wrinkles.
Irritation
low
Source
natural
Asiaticoside is a soothing, skin-repairing compound from Gotu Kola that helps calm irritation and supports a healthy skin barrier.
Irritation
low
Source
natural
Asparagine is a gentle, naturally occurring amino acid that helps attract and retain moisture in the skin, making it a safe hydrating ingredient for most skin types.
Irritation
low
Source
natural
A gentle seaweed extract that may help calm irritated skin and provide antioxidant protection, though research 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 botanical root extract with traditional use in East Asian medicine, showing early promise for soothing and hydrating skin.
Irritation
low
Source
natural
Antioxidant
Asparagus Officinalis Meristem Cell Culture Conditioned Media
A gentle, plant-derived ingredient that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
biotech
A gentle plant stem cell extract that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle Ayurvedic root powder that may help calm irritation and support skin hydration, though clinical evidence in cosmetics is still limited.
Irritation
low
Source
natural
Asparagus Root Extract offers mild antioxidant and soothing benefits, but research is limited and it's not a standout ingredient.
Irritation
low
Source
natural
Asparagus Stem Extract is a gentle, antioxidant-rich plant extract that may help soothe skin and fight free radical damage, though research is still emerging.
Irritation
low
Source
natural
Aspartic acid is a gentle, water-binding amino acid that helps keep skin hydrated and supports a balanced skin surface pH.
Irritation
low
Source
natural
A gentle botanical extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
natural
A gentle, fermented ingredient that helps hydrate and condition skin without irritation, but research on its specific benefits is still emerging.
Irritation
low
Source
biotech
A gentle, fermented ingredient that helps calm and condition the skin, especially beneficial for sensitive or irritated complexions.
Irritation
low
Source
biotech
Skin Conditioning
ASPERGILLUS/HYDROLYZED COLLAGEN FERMENT FILTRATE
A fermented collagen ingredient that may help hydrate and support skin firmness, but research is still emerging.
Irritation
low
Source
biotech
A gentle, fermented ingredient that may help calm skin and support hydration, though research on its benefits is still emerging.
Irritation
low
Source
biotech
A gentle fermented ingredient that helps soften and smooth skin without harsh scrubbing.
Irritation
low
Source
biotech