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This YouTube video (presented by Dr. Charles Mok) explains hyaluronic acid dermal fillers: that hyaluronic acid is a naturally occurring tissue component, fillers are cross‑linked to slow degradation, much of the initial breakdown happens within about 24 hours after injection, and a typical syringe is described as ~98% water and ~2% hyaluronic acid — meaning immediate volume largely reflects water rather than solid filler. The excerpt frames these facts to address maintenance timing (how often one might need touch-ups).










