Hyaluron Pen Cartridges 0.3 ml (5 pcs) — universal replacement capsules for the needle-free Hyaluron Pen device, compatible with all devices using a 0.3 ml nozzle. Used for fractional mesotherapy and injecting hyaluronic acid and other gels without a needle. The cartridge is installed into the pen with a clockwise twisting motion until fully seated, and re-tightened after each procedure. Supplied in single-use sterile packaging, intended for one application. Disposed of as plastic — no needle is present, so no special disposal requirements apply. Pack contains 5 cartridges.