When I sprayed 3 2x Instant Shine, it always give me a light headache, or some dizziness… Maybe a little happy (Maybe Placebo) but no apparent hits whatsoever
That can happen when first adjusting to pheromones. I haven’t gotten any headaches but I have given a friend of mine a few.
Hits with instant shine are very mild. Enjoy the cheerfulness, I find that to be the most beneficial effect. What’s the saying? Smiles are contagious, 
which is pretty much the point of Instant Shine. To spread shininess to the world! mwahahaha