Can an employer tell you how to wear your makeup?
Most business have dress codes but they usually don't include details on how to wear your makeup. Brightly colored eye shadow is starting to immerse into the world again for the first time since the 90's and some employers are sending their employees home because they show up with hot pink eyeshadow, bright red lip stick and glitter eyelashes.
I personal think that if you wanna rock hot pink eye shadow that is your call. I don't think you should be sent home for it or told to go into the bathroom and wash it off.