Refillable serum cartridge window pack

Ready-to-use prompt

Create a refillable serum cartridge window-pack concept. Show a translucent outer shell, replaceable inner cartridge, recycled-material micro label, starter kit and refill side by side, and a clean beauty packaging proposal board. Include a texture-viewing window, three-step refill diagram, material legend, blank capacity and shelf-life area, QR placeholder, and small front and side shelf previews.