Haha.. this question is kind of like “How many licks does it take to get to the tootsie roll center of the tootsie roll pop?”
I don’t think it’s really possible to overdose on Shine. Overdosing implies getting bad reactions. I can’t even think of the last person who told me they had a bad reaction from Instant Shine. Is it possible to be too Shiny?
Actually, now that I think about it, I remember Lor’s post from some months ago… about being too Shiny around someone at her son’s school… Read here, hehe: the curse of being shiny
You can megadose on Shine, though! (Which is different from Overdosing)
Megadosing is the art of completely dousing yourself in pheromones, far beyond the recommended dosage, for the sake of science and insanity. Since Shine is about a 3-spray-per-ideal-dosage product for most people, a megadose would likely include something like 10 sprays of double strength. Do a forum search on “Megadose” and you’ll see some interesting results.
I’ve megadosed on shine, and it’s gotten me rolling on the ground in laughter.