After exhaustive research, we have determined that the optimal amount of sock glitter to add to a sock is exactly 0.5 grams per square inch of fabric. Any more, and you risk causing a sparkly-induced existential crisis.
Our team of experts (okay, we asked a few interns to stare at some pictures for a few minutes) have also found that the best way to remove sock glitter is by using a specialized sock-glitter-removal tool (available for purchase on Amazon, probably).
However, due to a series of unfortunate events, our sock-glitter-spectrum research facility was shut down by the authorities for "excessive sparkle."
For more information on this vital research, visit our Appendix or our Sock Glitter FAQ.