pregnant bellyEveryone's always talking about that radiant pregnancy glow. What they keep to themselves are other not-so-radiant skin changes that can happen during pregnancy. Here's our guide to three skin ailments no one's talking about, and what you can do about them.

Stretch Marks
If you manage to avoid stretch marks during your pregnancy, you are in the small minority: up to 90 percent of expectant mamas will see the appearance of these pink, red or white streaks on their bellies, breasts, butts and other areas, caused by changes to the elasticity of the skin's supportive tissue. While research suggests that heredity may play a role, scientists have also linked the development of stretch marks to rapid weight gain.

There are some steps you can take to minimize the appearance of stretch marks. By exercising, eating right, and gaining the recommended amount of weight, you can lower your chances. Additionally, some mamas-to-be swear by creams containing vitamin E, cocoa butter, Retin-A and alpha hydroxy acids. You can also talk to your dermatologist about new cosmetic options, such as laser treatments.

Also referred to as "the mask of pregnancy," these dark, splotchy spots on the forehead and cheeks - which affect about half of the pregnant population - are caused by increased pigmentation resulting from hormonal changes. Doctors recommend that the best way to help prevent this condition is by wearing a minimum of SPF15 sunscreen every day, because skin is extra sensitive to sun during this time. We recommend investing in a sheer tinted moisturizer with SPF. A one-two punch of skincare and makeup, these provide a lightweight hint of color that evens and enhances skin without hiding it. Our pick? Laura Mercier Tinted Moisturizer with SPF20, which does double-duty by simultaneously helping to control oil-breakthrough.

If you thought you said goodbye to acne, pimples, and other breakouts when you graduated high school, think again. Particularly if you already have skin issues, your hormones will now multiply, and so may breakouts on your face, back and chest. The key is cleansing: develop a daily routine, beginning with a fragrance-free facial soap twice every day; experts recommend choosing a gentle formula with alpha-hydroxy acid. Finish up with an oil free moisturizer, and skip astringents and other acne meds unless recommended by your doctor. Speaking of your doctor, there are certain medications, such as topical antibiotics, which can be used during pregnancy, so make an appointment to discuss your options.

On the bright side, the aforementioned pregnancy glow is no myth. Because of increased blood flow during pregnancy, everything's working in overdrive, including the oil glands in your face. The result is that oft-mentioned shine. And remember: like most other things in pregnancy - and life, for that matter - the phrase, "this too shall pass," applies. Any hormonal changes that occur during pregnancy will return to normal when your baby is born. In the meantime, follow our suggestions to help put your best face forward for the next nine months.