Modern warlock potion.

Zings with citrus and black pepper out of the bottle, then sweetens up for a little while with anise and ginger. Other herbs are mashed up in there too, and the concoction constantly shifts, releasing smoky bubbles of impossible spell components for several hours–black violet leaf, glass wormwood, electric lavender.

Settles down to a bite of green on the skin, and is gone by noon.
Flips to the grimoire page of unisex.

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I love this.