Being in front of a camera can feel daunting so I often send out a little checklist to clients ahead of time to help them plan. This is a more in-depth description. Some things will apply to you, some not, but I hope it helps!

TEETH

• Brush and floss
• Have that coffee/tea AFTER your photos. It will undo your careful brushing and then there’s Murphy’s Law of spillage.
• If your teeth have stains and you’re worried about them in close-ups they can be lightened in post-processing, but not so much that it looks unnatural. 

GLASSES

• Clean your lenses. Smudges are tricky to touch up in Photoshop, especially if they're visible in every photo. I find a quick soap & rinse in the kitchen sink, followed by a polish get mine as clean as they’ll ever be.
• If you have TRANSITIONS (lenses that change into sunglasses in bright light) you can: take them off and just hold them in a few shots OR bring a backup pair with traditional lenses OR choose a location that isn’t too bright and your photographer can add light with flash (doesn't cause lenses to go dark). 

SKIN

• Have a blemish? Cut yourself shaving? Worry not, those are easy touch-ups in Photoshop.
• Moisturize in the morning to avoid dry skin. 
• Worried about shiny skin? Bring along some tissues/wet wipes for touch-ups.