Please use following steps to provide long lasting shelf life for your brush,
-Do not leave it in hot water.
-Keep it away from chemicals.
-Do not apply force to the brush.
-Do not keep your brush in closed areas, while it`s damp.
General cleaning advises for your brush:
Lather your brush with liquid detergent and warm water. Wait for 10 to 15 minutes before rinsing. If there are remaining residues inside the bristles, use toothbrush with warm water and soap, and gently brush the bristles. Lastly, use hair conditioner to lather your brush and wash it. Your brush will be as good as the first day.