This product does just what it's description says - it provides a new use for the Craft (Alchemy) skill/feat. The items mentioned are all potions, powders, salves and the like. The descriptions also tell a bit about the item's availability (i.e. how likely are the PCs to find one of these items in an alchemist's shop). Some of the items are medieval versions of things like weed killer, energy drinks, and stain removers, but others are more mythical, like a love potion and the Golem salve.