Acne

• Acne is the most common skin problem for pregnant mothers. While some over-the-counter acne creams are safe, many of them are not recommended for pregnant women. Avoid products containing salicylic acid. In oral form, it can cause birth defects and other complications. Most doctors recommend erring on the side of caution by avoiding topical products containing salicylic acid as well, though face washes with less than 2 percent salicylic acid is generally considered safe. Retinoids can be harmful, as large doses of vitamin A during pregnancy may harm the unborn child. Like salicylic acid, retinoids do not have any known negative side effects in topical form, but it is best to avoid them completely during pregnancy. Stay away from acne products containing benzoyl peroxide as well. Instead, opt for sulphur-based acne products or home microdermabrasion treatment kits.
  
  

Pigment Problems

• Some pregnant women develop a "pregnancy mask" on the face. Others notice darker skin around the nipples and thighs or a dark line running down the center of the belly. Stay out of the sun to help avoid making pigment problems worse. Azelaic acid and topical vitamin C products can help lighten the skin naturally without causing harm to your unborn baby. Use a matching shade of concealer to hide especially dark areas of skin. It is unknown whether other skin-lightening chemicals, such as hydroquinone, can cause harmful side effects during pregnancy, so it is best to avoid these products unless directed to use them by your doctor.
  
  

Rashes

• Skin stretching and hormones can cause rashes and itching, especially around the belly. Always see a doctor for any rash or skin irritation that develops during pregnancy to rule out any potentially serious pregnancy-related conditions. Calamine lotion and moisturizers can help soothe rashes and itches. Prescription-strength steroid creams can be used on more serious rashes for which over-the-counter products have been unsuccessful.
  
  

Stretch Marks

• Palm Beach dermatologist Ken Beer suggests that glycolic acid creams containing green tea are the most effective on stretch marks. Keep your skin moisturized with a good lotion or cocoa butter to improve your skin's elasticity. Consult with your doctor before using any commercial stretch mark cream to make sure it does not contain ingredients that might harm your baby. Laser treatments after delivery can help make stretch marks fade.