——————–Info and wiki links in the description below——————–
Note before the note: This works on super attack potions, and can make you 1.8mil an hour.
Note: The prices fluctuate quite regularly (especially when making many potions for days straight), and the method has been known to give a loss instead of a profit. If this happens, it’s best to stop and let the prices even out before continuing. This method (outfit, scroll of cleansing, portable well) could be used on lower level training methods as well, such as super attack potions.
Wiki for outfit and items:
Portable Well Location: World 84 Lumbridge Combat Academy
Scroll of Cleansing: