Elfleaf
During that session, Sas read The Alchemist's Laboratory: A Guide to Brewing Potions for Profit and Adventure (12), no new knowledge really. A section on the "Elfleaf" they had used on the tattoo. It comes from Hyulla-Putyor and is ground up then mixed with other additives to help sooth and heal the skin. Especially when used with a green elfleaf.
Session 076: Wilder Dreams of a Bard Report