Are Evergold lake (fountain of Youth) and Morwel's Fountain of Beauty the same thing? Are they somehow related?
Evergold gives +1d4 +1 enchantment bonus to Charisma that lasts one month. (Manual of the planes)
The fountain of beauty in the court of Stars gives +4 sacred bonus to Charisma for 1 week . Dungeon Magazine #149
According to, uhh, Planes of Chaos I think, they are the same thing. Evergold visits each of the Powers known for beauty on the plane, in turn (which was Aphrodite and that elven one when the book was written).