I have now been using glow for a week. Up to this point, the sole effect I have noticed from glow is a vivid red mark where I inject. Roughly 7 or 8 hours pass before a burning sensation begins, after which it feels like a continuous bee sting. As I understand it, the copper contained in the formula is responsible. I have come across some threads saying this occurs for a few weeks and then stops. What have your own experiences with glow been like? How long was it before you began to see any results? I am trying to work out whether continuing this product is worthwhile. Each day I pin 10 units.