Premium wooden hair & scalp brush offering traditional Taiwanese therapy. - Brand: SNOW FOX SKINCARE - Model Name: GUA SHA HAIR & SCALP BRUSH - Features: Premium Wood Edition I purchased this from the official online store, but I haven't had many opportunities to use it, so it has been stored in a dark place. Upon opening it for sale, I noticed some discoloration on the gold part of the brush. I contacted the manufacturer, and they said that the discoloration doesn't affect use and is caused by exposure to air, similar to what happens with normal use. Please consider purchasing only if you are not concerned about this. I have the official purchase certificate, but the warranty period has expired. A cleaning cloth is also included. Please be sure to check the photos. Returns are not accepted. Thank you for looking.