4. DON’T: Skip sunscreen
UV rays will stretch out collagen and damage the skin, leading to the dreaded sag.
5. DON’T: Crash diet
Every time you gain and lose weight, the breast tissue will become more slack.
6. DON’T: Smoke
Even if it’s just a few cigarettes, any smoking decreases blood supply to the surface of the skin, which will weaken and age it.
