Because harsh substances can seep into a baby's skin more easily than an adult's, parents should avoid putting substances on a baby's skin that dry or irritate, like chemical sunscreens. Instead of sunscreens that block UV rays chemically, says Dr. Kent Aftergut, a dermatologist at the University of Texas Southwestern Medical Center at Dallas, use sunscreens that block UV rays physically.
You can pick out physical sunscreens by reading the active ingredients. If the active ingredients list only zinc oxide, titanium dioxide or both, it's a physical blocker.
In bug season, when you're slathering a repellant with 30 percent DEET on yourself, use a much lower percentage on your baby, says Aftergut. Doctors take the same care when treating skin conditions in babies by avoiding harsh medications. For a case of teen acne, a dermatologist would likely prescribe a drying skin cream, but most doctors let baby acne go.
Next, find out why it's not good to leave babies in very hot or cold places for too long.