My son has oral LP of the inner cheeks and gumline.
He works long shifts as a first responder. He was prescribed a steroid asthma inhaler and was instructed to puff on the areas instead of inhaling. He can keep in his pocket for convenient relief. His derm has been prescribing it for years. They use a steroid that has minimal systemic side effects as the active ingredient.
Costly if not written to be covered by insurance.