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Vitamin D3 (cholecalciferol) is a fat-soluble vitamin naturally present in the body and in some animal-derived foods. In dietary supplements, it is commonly used as cholecalciferol, dissolved in oil and measured in micrograms (µg) or international units (IU), in soft capsules, drops, or tablets. The raw material can come from lanolin (sheep wool fat) or from vegan sources through fermentation and subsequent processing. In cosmetic formulations, it may appear as an ingredient in small amounts, usually listed on the label with the INCI name "Cholecalciferol." As a substance, it is a derivative of sterols with a lipophilic structure, often combined with oil carriers for stability and distribution. In products, the designation "D3" is used to distinguish it from vitamin D2 (ergocalciferol), which is another form of vitamin D.
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Vitamin C
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Fat-soluble vitamin; essential for vision, immunity, and skin.
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Fat-soluble vitamin; essential for blood clotting and bone health.
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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.
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Fat-soluble antioxidant that protects cells from oxidative damage.
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Essential mineral for thyroid hormone synthesis.
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