Abstract
Hyaluronic acid (HA) is a glycosaminoglycan composed of numerous repetitions of D-glucuronic acid and N-acetyl-D-glucosamine. It is found naturally in many tissues of the human system, including the skin, the synovial fluid of joints, the vitreous humor of eyes, and the cartilage. About 50% of it is found in the skin. In physiological pH, it is a polyanionic polymer and highly loaded, so that it binds extensively to water, being able to retain it up to 1000 times its volume [1] (Fig. 39.1).
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Hans, N., Sakuma, T. (2020). Introduction: What Is Hyaluronic Acid Filler?. In: Costa, A. (eds) Minimally Invasive Aesthetic Procedures . Springer, Cham. https://doi.org/10.1007/978-3-319-78265-2_39
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DOI: https://doi.org/10.1007/978-3-319-78265-2_39
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