Discard the plastic cap. Never use it again. The moist collected inside the plastic cap will damage the hair.
For storage: best is to hang the brush when not used.
Wash after use to remove the ink in the hair.
Before each use, wash in the water first before dipping it in the ink.
Size: L: Length: 22.0cm Diameter: 0.5cm Hair length: 3.0cm;M: Length: 21.5cm Diameter: 0.4cm Hair length: 2.5cm;S: Length: 21.0cm Diameter: 0.35cm Hair length: 2.0cm.