Saturated fatty acids
ChemicalSubstanceA class of fatty acids characterised by a fully saturated carbon chain with no double bonds, making them chemically stable and resistant to oxidation.
Chemical Substance
7 entities in this category
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7 entities found in ChemicalSubstance starting with S Clear filters
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Sebum
ChemicalSubstanceThe complex lipid mixture secreted by sebaceous glands onto the skin surface via the follicular canal.
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Serine
ChemicalSubstanceSerine is a key amino acid for skin, required for ceramide synthesis via serine palmitoyltransferase and as a major NMF component that supports hydration and keratinocyte proliferation.
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Short-chain fatty acid
ChemicalSubstanceShort-chain fatty acids are microbially-derived metabolites - principally butyrate, propionate, and acetate - that serve as the primary functional output of a healthy gut microbiome.
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Sodium lauryl sulfate
ChemicalSubstanceAn anionic surfactant used in cleansers, shampoos, and personal care products that disrupts the stratum corneum through two sequential mechanisms.
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Substance P
ChemicalSubstanceSubstance P is an 11‑amino‑acid neuropeptide that drives neurogenic inflammation, itch, pain, mast‑cell activation, and stress‑linked hair shedding via NK1 receptor signalling in skin.
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Sunscreen active ingredients
ChemicalSubstanceSunscreen actives divide into mineral and chemical filters. The clinically meaningful distinction is systemic absorption, not UV mechanism — both primarily absorb UV radiation.