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The most abundant mineral in the body; essential for bones, teeth, and normal muscle function.
Approved claims
Salicylic acid is an aromatic organic acid (2‑hydroxybenzoic acid) that occurs naturally in some plants and is widely used as a functional cosmetic ingredient. In formulations it appears as a crystalline powder and is typically incorporated via suitable phases/solvent systems, used either as the free acid or as salicylate salts (e.g., sodium salicylate, potassium salicylate, TEA‑salicylate). In skincare it is found in both leave‑on and rinse‑off products such as gels, serums, toners, creams, and cleansers, where the level is commonly expressed as “acid” (salicylic‑acid equivalent). In haircare it can be present in shampoos and scalp products. In some formulations it may also be used as a preservative, under specific regulatory conditions. pH selection and solubilisation strategy are part of the formulation design to keep the ingredient stable and compatible with other components.
Glucosamine is an amino sugar (aminomonosaccharide) that occurs naturally in the body as a building block within certain connective-tissue structures. In food supplements it is most commonly used as glucosamine sulfate or glucosamine hydrochloride, often stabilised as a salt with sodium chloride or potassium chloride, and presented as tablets, capsules, powders, or sachets. The raw material may be sourced from marine materials (e.g., crustacean shells) or produced via microbial fermentation, depending on the manufacturer and purity specifications. On labels it may also appear as “glucosamine sulfate sodium chloride” or “glucosamine sulfate potassium chloride”, which describe stabilised sulfate forms. In cosmetics, glucosamine-related derivatives may be used as functional ingredients in water-based formulas, while supplements typically focus on oral dose forms. Products frequently combine it with other ingredients from the same category, such as chondroitin, and declare the amount either as the salt form or as a glucosamine equivalent.
Collagen is a family of fibrous proteins naturally present in animal connective tissues and, in consumer products, it is most commonly sourced from bovine, porcine, or marine raw materials. In supplements it is frequently used as hydrolysed collagen, also labelled as “collagen peptides”, where the protein is broken down into smaller peptides to improve solubility and ease of use in powders, capsules, tablets, and ready-to-mix drinks. On labels it may appear as “hydrolyzed collagen” or “collagen peptides”, with the origin sometimes specified as marine, bovine, or porcine. In cosmetics, collagen is typically declared under the INCI name “Hydrolyzed Collagen” and is used in water-based formulas such as serums, creams, and masks, often at modest concentrations alongside humectants and film-forming polymers. As a material, it is a mixture primarily composed of amino acids, peptides, and proteins, with properties influenced by the source and degree of hydrolysis. Because it is protein-based, collagen-containing products can have a characteristic taste or odour, so flavoured options are also common.
Bifidobacterium refers to a genus of Gram‑positive, anaerobic bacteria that naturally occur in the human and mammalian gastrointestinal tract. In food supplements it is typically present as live cultures identified at species level and often at strain level, shown on labels with a Latin name plus a strain code or number. Because many bifidobacteria are sensitive to oxygen and moisture, common presentations are capsules or powders using protective technologies (e.g., protective matrices or microencapsulation) and the amount is usually expressed as CFU. In cosmetics, the genus name is most often encountered through fermentation-derived materials, such as Bifida Ferment Lysate or related ferment filtrates, which are not necessarily live microorganisms. These fermented materials are used in water-based formulas such as serums and creams as soluble biotech ingredients. In practice, “Bifidobacterium” on an ingredient list may indicate either an oral probiotic culture or a topical ferment derivative, so the exact meaning depends on the form stated on the label.
Trace mineral that helps macronutrient metabolism and blood glucose levels.
Approved claims
Lactobacillus is a genus of lactic acid bacteria (LAB) naturally present in fermented foods and in the human microbiota. In food supplements it is typically used as a probiotic culture identified precisely by genus, species and often a strain code, while the amount is commonly expressed as CFU (colony-forming units). In recent years, many species formerly labelled as “Lactobacillus” have been reclassified into new genera (e.g., Lactiplantibacillus, Lacticaseibacillus, Limosilactobacillus), so both legacy and updated names may appear on labels for the same organisms. In products, these cultures are supplied as freeze-dried powders in capsules, sachets or tablets, often combined with prebiotics or additional bacterial strains. In cosmetics, “Lactobacillus” may also appear as part of ferments or ferment filtrates (INCI), where the material is not necessarily a live culture. Because “Lactobacillus” is a broad genus-level term, the exact nature of the ingredient depends on the declared species and strain on the label.
Choline is a water-soluble organic compound often grouped with the B-complex family, occurring naturally in foods such as eggs, meat, fish and legumes, and also present in the body as part of phospholipids. In supplements it is used as choline bitartrate, choline chloride, alpha-GPC (L-alpha-glycerylphosphorylcholine) or citicoline (CDP-choline), and also via lecithin as a source of phosphatidylcholine. On labels it may also appear as “total choline” calculated from these sources. In cosmetics, choline derivatives and phospholipids can be used in formulas as components of liposomal delivery systems or within conditioning blends, typically in leave-on or rinse-off products. Choline is commonly presented in capsules, tablets, powders or liquids, often combined with phospholipids or other lipid-matrix ingredients. Composition and concentration depend on the chemical form and on how the raw material is standardised.
Vitamin K2 is the name for a group of vitamin K forms called menaquinones, sharing the same 2‑methyl‑1,4‑naphthoquinone core and differing by the length of their isoprenoid side chain. It occurs naturally in certain fermented foods and in animal-derived foods, and in the body some vitamin K can be converted into specific menaquinone forms. In supplements, vitamin K2 is most commonly provided as menaquinone‑7 (MK‑7) or menaquinone‑4 (MK‑4), typically dissolved in oil and filled into softgels, or deposited onto carriers such as microcrystalline cellulose for tablets and capsules. On labels it may appear as “menaquinone”, “MK‑7”, or “MK‑4”, with amounts usually declared in micrograms. In cosmetics, vitamin K and related derivatives may be used in low-percentage topical formulas, often in oil-soluble or encapsulated delivery systems. As a fat‑soluble vitamin, it is commonly formulated with lipid ingredients to support stability and dispersion within the product.
Inositol is a six‑carbon polyol (sugar alcohol), chemically a cyclohexanehexol, occurring naturally in the human body and widely in plant foods. It exists as several stereoisomers, with myo‑inositol being the most prevalent form, while D‑chiro‑inositol is less abundant and is used either alone or in defined combinations in supplements. In foods and food supplements, inositol is typically supplied as a soluble powder or as capsules/tablets, most often as myo‑inositol, D‑chiro‑inositol, or as phosphorylated derivatives such as inositol hexaphosphate (IP6/phytate). In cosmetics it appears under the INCI name “INOSITOL” and is used in face, body, and hair formulas, usually at low levels within the water phase. Owing to its strongly hydrophilic character, it is easy to incorporate into serums, creams, toners, and leave‑in hair products. In formulations it may also be present as part of complexes alongside other humectant or conditioning ingredients.