Many women experience acne during pregnancy. It is most common during the first and second trimester. During pregnancy our body produces an increased amount of hormones called androgens which can cause the glands to grow and produce more oil. This oil leads to bacteria, inflammation, and breakouts. This is natural, and nothing to worry about from a health perspective. There is often no way to prevent acne during pregnancy as it is not possible to control the hormonal changes that lead to the problem. However, you can take following precautions to check its outbreak:
If you still get acne despite following the above mentioned tips, then you should take appropriate medicine as prescribed by the dermatologist. Medicines like Clindamycin e.g. Cleocin T, Clindagel, Azelaic acid (Finacea, Azelex) and Erythromycin are considered safe during pregnancy. You can also apply the medicine only as recommended as most products are intended for daily or twice-daily use only. Also try some home remedies like apply a mixture of honey and ground oatmeal to your face and rinsing off gently. Massage gently with a plain carrier oil such as argan oil or olive oil. You can also consider applying aloe vera gel to cure acne. These treatments will not be as effective as taking medicines though.
However, avoid hormone therapy including anti-androgens like spironolactone, flutamide and estrogen as these can lead to major developmental changes to the foetus. Oral tetracycyclines and topical retinoids should also be avoided. Accutane also leads to increased risk of miscarriage, hence do not even consider it.
In case you have a concern or query you can always consult an expert & get answers to your questions!