yes
heat it up (warm setting on the oven, or boiling water), heats up the stika-flex that bonds them together
prise them apart then before re attaching, re heat the bonding glue (stikaflex) or add some new and it will re bond it together
hairdrying in the rear through the bulb inlet to get all moisture back out of the lense, stopping it from clouding up, condensing inside.
wayne