"AH! I see you have arrived! At last! I was looking for more test subjects-...er... Friends! To try some of my potions!"
The Alchemy Shop is where a Bubby can use various potions they've discovered around Puraton. Beware, though, because Potions can change things about your Bubby's look!!
To read up on how to use potions and what they're for, check out this guide!