The Problem: Heavy Foundation

Not only is your skin most likely a shade or two darker in the summer (although we don't advocate any sun exposure without the proper SPF protection), you probably need a lighter -- that refers to texture and ingredients, not color -- foundation so your skin can breathe.

The Fix: Try a sheer, oil-free foundation with SPF and moisturizer.

The Nest recommends: Smashbox High Definition Healthy FX Foundation SPF 15 or Bare Escentuals i.d. bareMinerals SPF 15 Foundation

Smashbox: sephora.com, $38
Bare Escentuals: sephora.com, $25