Grooming/makeup

I know we've already had recent discussions about riders who clip their nails, but why on earth do women do makeup on the BART train? With the motion and the shaking, I couldn't understand it when a woman across the aisle from me did her mascara, eyeliner, etc. during the 40 minute or so ride. She even plucked her eyebrows, ew! I consider eyebrow plucking like nail clipping--you might not think it's gross since it's your own, but please, out of consideration for other people!

I think she noticed my disbelief because she glanced over at me. She continued with her beauty routine though. I didn't take a picture because my camera phone would have been rather obvious.