Get rid of resin and other debris from your rubber or silicone pipe using this method:
Dismantle: Take the pipe apart and wash the bowl with warm soapy water separately. Let it air dry.
Freeze: Rinse your pipe with warm water before freezing for one hour.
Remove resin: The freezer will have hardened the resin, so you should be able to remove it by gently tapping the pipe against a surface. You might need to use a cotton swab to push it out.