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    GlossaryFilaggrin (FLG)

    protein crucial for skin barrier function and hydration

    Filaggrin is a protein found in the outermost layers of the skin that plays a crucial role in maintaining the skin's barrier function and hydration. It helps to aggregate keratin fibers, which strengthens the skin and protects against environmental damage. Deficiencies or mutations in the filaggrin gene are linked to skin conditions like eczema and ichthyosis vulgaris.

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