Maintenance: Do not pull, to avoid boar bristles falling out. Keep this hair brush in a dry and ventilated place, avoid direct sunlight Do not place this mini comb in a damp or hot place to avoid deformation and affect normal use. Tips: Please note that we have applied boar's hair (the black lower section) to make your hair healthy and shiny. Boar's hair is actually quite similar to human hair, it is fragile in nature. Thus, you will experience some boar bristles falling out and breaking during uses. This is NORMAL and not a QUALITY ISSUE. The only way to completely eliminate this issue is to use the durable synthetic or nylon bristles instead. However, we choose not to. Cleaning Instructions Grab your boar bristle brush, run your finger or a hairbrush cleaning tool it through the boar bristles to remove any strands of hair, flaky scalp skin and dirt from the bristles. This can be challenging as the bristles are tightly packed - just do the best you can. DO NOT USE HARD TOOTH BRUSH that would break the soft boar bristles to make them fall off. Specifications: Material: Massage comb Color: As Pictures Shown Package Weight: Approx. Function: Massage comb Packing quantity: 1pack Dimensions: 3.74*1.37inch (folded), 7.08*0.78inch (expanded)