Sea salt can be a gentle physical exfoliant and mineral source, but it may be drying or irritating for sensitive or dehydrated skin.
Irritation
moderate
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
Sea salt can be a gentle physical exfoliant and mineral source, but it may be drying or irritating for sensitive or dehydrated skin.
Irritation
moderate
Source
natural
A gentle fermented ingredient that helps hydrate and strengthen the skin barrier, ideal for sensitive and dry skin types.
Irritation
low
Source
biotech
A gentle, fermented ingredient that may help calm and condition skin, but research is still early.
Irritation
low
Source
biotech
Sea silt is a gentle, mineral-rich exfoliant that can help polish skin and absorb excess oil without harshness.
Irritation
low
Source
natural
A gentle, mineral-packed marine extract that helps calm and nourish the skin without clogging pores.
Irritation
low
Source
natural
A gentle fermented ingredient that may help hydrate and support the skin barrier, but research is still limited.
Irritation
low
Source
biotech
A gentle plant extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
Sea water provides a mineral-rich boost of hydration and can help soothe the skin, but it's not a miracle ingredient and may not suit very dry or sensitive skin types.
Irritation
low
Source
natural
A gentle marine extract that may help calm irritated skin and fight free radicals, but research is still early.
Irritation
low
Source
natural
Sea Wormwood Oil offers soothing and antimicrobial benefits but can be irritating for sensitive skin due to its essential oil content.
Irritation
moderate
Source
natural
A gentle marine extract that helps calm irritation and protect skin from environmental stress, ideal for sensitive or reactive skin types.
Irritation
low
Source
natural
Seahorse extract is a traditional marine ingredient with limited modern research for cosmetic use; its benefits are largely anecdotal and sustainability concerns are significant.
Irritation
low
Source
natural
Seal oil is a moisturizing marine oil with omega-3s, but its use raises ethical and sustainability concerns, and it may clog pores for some.
Irritation
low
Source
natural
A gentle, lab-grown seaweed extract that may help calm irritation and defend against environmental stress, though human research is still limited.
Irritation
low
Source
biotech
A gentle seaweed blend that helps hydrate and calm the skin, suitable for most skin types.
Irritation
low
Source
natural
A gentle, hydrating seaweed extract that helps soothe and protect the skin, making it a great choice for sensitive or dry skin types.
Irritation
low
Source
natural
Humectant
ASCOPHYLLUM NODOSUM/FUCUS VESICULOSUS/LAMINARIA CLOUSTONI/LAMINARIA DIGITATA EXTRACT
A gentle, nutrient-packed seaweed blend that hydrates and soothes skin with antioxidant benefits.
Irritation
low
Source
natural
Humectant
ASCOPHYLLUM NODOSUM/FUCUS VESICULOSUS/HIZIKIA FUSIFORME/KJELLMANIELLA GYRATA/LESSONIA NIGRESCENS/SACCHARINA ANGUSTATA/SACCHARINA JAPONICA/UNDARIA PINNATIFIDA EXTRACT
A nourishing seaweed blend that hydrates, soothes, and protects skin with antioxidants, but its complex sourcing may vary in potency.
Irritation
low
Source
natural
A gentle seaweed blend that hydrates and provides antioxidant protection, ideal for most skin types.
Irritation
low
Source
natural
Humectant
Chondrus Elatus/Saccharina Angustata/Monostroma Nitidum Thallus Extract
A gentle seaweed blend that helps hydrate and calm the skin, but research on this specific mix is limited.
Irritation
low
Source
natural
A fermented seaweed-yeast complex that helps hydrate and soothe skin while supporting a healthy barrier.
Irritation
low
Source
biotech
Sebacic acid is a gentle, plant-derived ingredient that helps balance product pH and offers mild exfoliation without significant irritation.
Irritation
low
Source
natural
Sec-Butyl Alcohol is a synthetic solvent that helps other ingredients mix, but it can be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic film-forming monomer found mainly in nail products; it helps create a durable, glossy coating but can be a skin sensitizer for some people.
Irritation
moderate
Source
synthetic
A synthetic skin-conditioning ingredient that improves product feel and spreadability, with limited but promising safety data.
Irritation
low
Source
synthetic
A synthetic skin conditioner that helps products feel smooth and non-greasy, with a low risk of irritation.
Irritation
low
Source
synthetic
A gentle, water-rich fruit juice that adds light hydration and antioxidant support, but lacks strong clinical evidence for dramatic skin benefits.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is limited and benefits are not yet proven in large human studies.
Irritation
low
Source
natural
A gentle, plant-derived extract with soothing and antioxidant potential, but research is still early.
Irritation
low
Source
natural
A gentle, plant-based antioxidant that may help calm skin and fight free radical damage, though research is still early.
Irritation
low
Source
natural
A gentle fermented plant extract with antioxidant potential, but human studies are limited.
Irritation
low
Source
biotech
A gentle, lab-grown plant extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
A gentle plant extract with antioxidant potential, but research on its cosmetic benefits is still limited.
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, plant-based antioxidant that may help calm skin and fight free radicals, though research is still early.
Irritation
low
Source
natural
Seed oils are versatile moisturizers that help soften and protect the skin, but their comedogenic potential varies widely by type.
Irritation
low
Source
natural
A gentle, plant-derived cleanser that creates a mild foam and helps remove dirt without stripping the skin's natural moisture barrier.
Irritation
low
Source
natural
Selenium sulfide is a well-studied antifungal ingredient that effectively controls dandruff and scalp flaking, but it can be drying or irritating for sensitive skin.
Irritation
moderate
Source
synthetic
A gentle botanical extract with antioxidant potential, but research is limited and benefits are not yet well-established in modern skincare.
Irritation
low
Source
natural
A lesser-known botanical extract that may offer soothing and antioxidant benefits, but research is very limited and safety data is sparse.
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
A gentle, natural clay that helps control oil and improve product texture without drying out the skin.
Irritation
low
Source
natural
A gentle clay mineral that helps absorb excess oil and improve product texture without stripping the skin.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
natural
Serica is a silk-derived ingredient that gives skin a silky, smooth feel and helps lock in moisture, but it may not suit those with silk allergies.
Irritation
low
Source
natural
Serica Extract is a gentle, silk-based humectant that helps skin feel soft and hydrated without clogging pores.
Irritation
low
Source
natural
Serica Powder is a natural silk-derived ingredient that gives makeup a silky feel and helps absorb excess oil without clogging pores.
Irritation
low
Source
natural
Sericin is a gentle silk protein that helps skin hold onto moisture and feel smooth, but it's not a miracle anti-aging ingredient.
Irritation
low
Source
natural
Sericoside is a gentle plant extract that may help calm skin and support a youthful appearance, but research is still early.
Irritation
low
Source
natural
Serine is a gentle, water-binding amino acid that helps keep skin plump and supports a healthy barrier without irritation.
Irritation
low
Source
natural
A gentle enzyme exfoliant that breaks down dead skin proteins without harsh scrubbing, but research in topical skincare is still limited.
Irritation
low
Source
biotech
Serum albumin is a protein that can temporarily smooth and firm the skin, but its benefits are mostly surface-level and not well-supported by modern research.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific skincare benefits is still limited.
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, lab-grown plant cell extract that may help protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
biotech
A gentle, semi-synthetic emollient that softens skin and improves product texture without heavy greasiness.
Irritation
low
Source
semi-synthetic
A mild, plant-based emulsifier that helps blend oil and water in creams and lotions while adding a light, non-greasy feel.
Irritation
low
Source
semi-synthetic
Film Former
SESAME OIL/SUCCINIC ACID/TRIRICINOLEIN COPOLYMER
A gentle film-forming polymer that helps makeup and sunscreen stay put without feeling heavy or greasy.
Irritation
low
Source
semi-synthetic
Sesame seed butter is a gentle, natural emollient that softens and conditions skin without clogging pores, making it a good choice for dry or sensitive skin.
Irritation
low
Source
natural
A gentle, water-friendly emollient that helps cleanse without stripping the skin, but its PEG modification raises mild environmental and purity considerations.
Irritation
low
Source
semi-synthetic