Your Glossy Products Are Mirrors. Start Lighting Them That Way.
Every commercial photographer has a version of this story. A client sends over a cosmetics product, something small and impossibly shiny, and you set up what feels like a reasonable light position and fire a test shot. The result looks like a snapshot from a drugstore circular. The surface is either blowing out in a hot white blob or reading as a flat, lifeless panel with no dimension whatsoever. I have a lighting journal where I sketch every setup from every shoot, and I can flip back through dozens of pages where a note in the margin reads some version of “glossy surfaces are the enemy.