You can wipe it off with microfiber cloth or damp cloth with water and soft soap (shampoo). If your frame has canvas without glass, we recommend simply dust using a dry soft and fine brush. Refrain from using wood polish or cleaning sprays since this could potentially create moisture and possibly damage the artwork.
Dust your frames regularly to avoid the accumulation of dirt. If you want to disassemble the frame for an even more thorough cleaning, be sure to lay the various components onto a clean, dust-free towel or blanket. Make sure all components are completely dry before reassembly.
