Herb Shop
Herb Shop
Cadenza: The Kiss of Death - A Mystery Hidden Object Game (Full) Guide
Cadenza: The Kiss of Death - A Mystery Hidden Object Game (Full) Guide
Added:
Just hand over the item the fireworks merchant gave to you to the herbalist. You will gain access to his secret lab.
Below, you can see the green X spots for you to check out. They have the ingredients there and just return to the secret lab to concoct the antidote yourself.