We've all seen, once per episode, Prince Adam hold his sword in the air, shout
"By the power of Greyskull"
and he and his cat getting transformed into the hulking skeleton-fighting duo, "He-Man" and "Battle-Cat" in a spectacular lightning-filled ritual, which the cartoon makes quite a big deal about showing us.
But then in the epilogue, they are once again back as Adam and Cringer, (ready for the next episode I suppose) with no mention of how they turned back.
Did any episode ever reveal how this is done?