The Life Up Cream, rendered as LifeUpCream in the menus due to character limitations, is an item found in EarthBound Beginnings. It is a special ointment used to restore all HP to a party member.
When used, the Life Up Cream will restore 999 HP to the selected party member. As it is not possible to exceed 999 maximum HP through normal gameplay, it essentially restores all of a party member's HP.