First, you need to know if you're allergic to any makeup product or brand. Before your appointment, try applying a tiny amount of makeup on top of your hand just to see if you’ll have any adverse reactions. If you tend to have sensitive skin or clogged pores, your artist can avoid using products that have harsh or pore-clogging ingredients. After the event, make sure not to wear your makeup to bed. To be safe, do your nighttime routine earlier in the evening rather than right before your head hits the pillow.