I like to wear makeup sometimes and when I play my flute, the area under my lip turns greyish or black. I've seen this happen to other girls who wear makeup too.... For me it seems to happen even more often if I wear mineral makeup. What causes this? Do you think it would happen if I were playing on a gold headjoint instead?
When this happens I am always playing on a solid silver headjoint.
I believe your Mineral make up is acting as a polish and your skin as a polishing cloth. The make up is a fine powder and you are pushing, or brushing, or moving just slightly enough to be polishing your flute's lip plate. Switching to gold will not make much if any difference.
I might suggest you wipe your lip area clean before you play and then re-apply your make up to that spot after playing. The Mineral cases are pretty small so you can carry them with you. Put it in a zip lock bag in case it pops open.