Dermal fillers add volume and help retain moisture. The most widely used types of dermal fillers are those made from hyaluronic acid, which is a glycosaminoglycan unit, which is composed of replicated glucuronic acid and N-acetyl-glucosamine units. Hyaluronic acid is naturally a polysaccharide found in body tissues such as the skin and cartilage. It is very hydrophilic (attracts water), which causes pressure swelling which can withstand compressive forces that make hyaluronic acid the ideal substance as dermal fillers.
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