Manganese Acetylmethionine is a gentle antioxidant that may help protect skin from environmental stress, but research 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
Manganese Acetylmethionine is a gentle antioxidant that may help protect skin from environmental stress, but research is still limited.
Irritation
low
Source
semi-synthetic
Manganese aspartate is a trace mineral antioxidant that may help protect skin from environmental stress, but research in topical skincare is still limited.
Irritation
low
Source
synthetic
Manganese Citrate is a gentle mineral antioxidant that may help protect skin from environmental stress, but research on its topical benefits is still limited.
Irritation
low
Source
synthetic
A novel synthetic manganese complex with theoretical antioxidant benefits, but very limited research and no established safety or efficacy data in cosmetics.
Irritation
low
Source
synthetic
Manganese glycinate is a gentle antioxidant that may help protect skin from environmental stress, but research in topical skincare is still limited.
Irritation
low
Source
semi-synthetic
Mangiferin is a gentle plant antioxidant that may help calm redness and protect skin from environmental stress, but human studies are still limited.
Irritation
low
Source
natural
Mango pulp extract is a gentle, antioxidant-rich ingredient that helps soothe and hydrate skin, but its benefits are mostly from its nutrient content rather than any unique active.
Irritation
low
Source
natural
Mangosteen bark extract is a gentle antioxidant that may help calm skin and fight environmental stress, but research on its topical benefits is still limited.
Irritation
low
Source
natural
Mangosteen peel powder is a natural antioxidant-rich ingredient that may help calm skin and protect against environmental stress, but more human studies are needed to confirm its benefits.
Irritation
low
Source
natural
A gentle antioxidant-rich powder from mangosteen rind that helps protect skin from environmental stress and may calm irritation.
Irritation
low
Source
natural
A gentle antioxidant blend from mangosteen rind that helps shield skin from environmental stress and may support a more even tone.
Irritation
low
Source
natural
Mangostin is a plant-derived antioxidant that helps protect skin from environmental stress and may calm irritation, though more human studies are needed.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help protect skin from environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited and benefits are not yet well-documented.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
Mantis extract is a novel, insect-derived ingredient with potential antioxidant benefits, but current evidence is very limited and it is not widely used or studied in skincare.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract that helps calm and protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
Maqui berry extract is a gentle antioxidant that may help protect skin from pollution and UV damage, but more human studies are needed.
Irritation
low
Source
natural
Maqui berry juice is a gentle, antioxidant-rich ingredient that helps protect skin from environmental stress and may support a more even complexion.
Irritation
low
Source
natural
A gentle, antioxidant-rich leaf extract that may help protect skin from environmental stress and support a more even-looking complexion.
Irritation
low
Source
natural
A gentle, plant-derived antioxidant that helps protect skin from environmental stress and may support a more even skin tone.
Irritation
low
Source
natural
A gentle, antioxidant-rich water from maritime pine bark that helps soothe and protect skin from environmental stress.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that helps protect skin from environmental stress and may support a more even complexion.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant and soothing potential, but limited high-quality human studies for cosmetic benefits.
Irritation
low
Source
natural
A lab-grown extract from marula tree cells that may help protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
biotech
A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and supports a healthy-looking complexion.
Irritation
low
Source
natural
Maslinic acid is a gentle plant-derived antioxidant that helps protect skin from environmental stress and may support collagen health, though human studies are still limited.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that helps protect skin from environmental stress while offering mild soothing benefits.
Irritation
low
Source
natural
A gentle, antioxidant-rich ferment from a rare mushroom that may help calm skin and defend against environmental stress.
Irritation
low
Source
natural
A gentle, antioxidant-rich mushroom ferment that may help calm skin and defend against environmental stress.
Irritation
low
Source
natural
A gentle, antioxidant-rich mushroom powder that may help soothe and protect skin, though research is still emerging.
Irritation
low
Source
natural
A gentle, lab-grown flower extract that may help protect skin from environmental stress and support a more even tone.
Irritation
low
Source
biotech
A gentle, antioxidant-rich bark extract from the Amazon with emerging research on soothing and protecting skin.
Irritation
low
Source
natural
Mealworm larva extract is an emerging, sustainable ingredient with potential moisturizing and antioxidant benefits, but research in human skincare is very limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract from the Himalayas that may help calm and protect skin, though research is still early.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited compared to more common Melaleuca species.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited compared to more studied plant extracts.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific benefits for skin is still limited.
Irritation
low
Source
natural
Melanin is a promising antioxidant and UV-protective ingredient, but its use in cosmetics is still emerging and not yet widely proven in human studies.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its skincare benefits is still limited.
Irritation
low
Source
natural
Melatonin is a potent antioxidant that may help protect skin from environmental damage and support overnight repair, but more human studies are needed.
Irritation
low
Source
semi-synthetic
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 plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural
A gentle, fermented melon extract that provides antioxidant benefits and supports skin hydration without irritation.
Irritation
low
Source
biotech
A gentle, plant-based antioxidant extract with limited but promising research; best as a supporting ingredient in antioxidant-rich formulas.
Irritation
low
Source
natural
A gentle, plant-based extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
Menadione is a synthetic vitamin K3 with limited skincare benefits and notable safety concerns, making it a less common and cautious choice in modern formulations.
Irritation
moderate
Source
synthetic
Menaquinone-7 is a vitamin K2 form that may help firm skin and fade dark circles, but research in cosmetics is still early.
Irritation
low
Source
natural
A synthetic antioxidant that may help protect skin from environmental stress, but research is still limited compared to more established antioxidants.
Irritation
low
Source
synthetic
Methionine is a gentle antioxidant amino acid that helps protect skin from environmental stress and supports natural repair processes.
Irritation
low
Source
natural
A gentle, stabilized vitamin C derivative that brightens skin and fights free radicals with minimal irritation.
Irritation
low
Source
semi-synthetic
A gentle, stabilized vitamin C derivative that brightens and protects skin without the sting of pure L-ascorbic acid.
Irritation
low
Source
semi-synthetic
A synthetic antioxidant that may help protect skin from environmental stress, but research is still limited.
Irritation
low
Source
synthetic
Methoxychalcone is a gentle antioxidant that may help calm skin and protect against environmental stress, but research is still emerging.
Irritation
low
Source
synthetic
A cinnamon-derived antioxidant with antimicrobial potential, but its fragrance component can be irritating for sensitive skin.
Irritation
moderate
Source
natural
Methoxycinnamic acid is a gentle antioxidant that may offer mild UV protection and skin-brightening benefits, but it is not a primary sunscreen agent.
Irritation
low
Source
natural
A synthetic antioxidant that may help protect skin from environmental stress, but research is limited and it can be irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic antioxidant that may help protect skin from environmental damage, but research is still emerging compared to more established antioxidants like vitamin C.
Irritation
low
Source
synthetic
A stable synthetic antioxidant that helps defend skin against pollution and UV damage without common irritation.
Irritation
low
Source
synthetic