Scroll of cleansing

The Scroll of cleansing is a Dungeoneering reward. It requires a Herblore level of 49 and a Dungeoneering level of 55, and is a members only item. Once used, the scroll will disappear, giving the following permanent effects:
 * You receive a 1 in 8 chance that you make a potion twice as fast as usual
 * You receive a 1 in 10 chance that you save a secondary ingredient when making any potion
 * For some reason when making strength potions it saves the unf potion instead of the limpwurt root. This may mean it saves the cheaper ingredient rather than always the secondary. As of the second day this is changed to save the root.
 * When you make extreme magic potions, it saves the magic potion instead of the ground mud rune
 * When you make super prayer potions, it doesnt save anything.
 * When you make extreme attack potions, it saves the super attack potion instead of the avantoe herb
 * When you make extreme strength potions, it saves the super strength potion instead of the dwarf weed herb

Trivia

 * On the in-game Dungeoneering rewards guide, it is incorrectly labelled as "Wastless herblore".