This anaesthetic has proven quite useful for treating mosquito bites, as a small amount applied directly to the area neutralizes the itching for multiple hours. As such, I have drawn up a design for creating it in a production cabinet. 

Frustratingly, I have struggled significantly with this design. Perhaps a greater alchemist than I could compress it into a chamber with 1 fewer hexes on each side. Alas, I could not make the geometry work out, and have had to settle for the larger model.