2. Pimples on Your Chin, Jawline, or Neck
The culprit is your period. Hormones like testosterone fluctuate throughout your cycle and make your glands produce more oil, which can ultimately clog your pores and result in pimples.
Rev up your treatment the week before your period: If you regularly use a cleanser with an acne-fighting ingredient such as benzoyl peroxide or salicylic acid, apply a leave-on treatment with that same active ingredient, and treat your chin, jawline, neck, and the rest of your face just to be safe.
If you get super-bad breakouts at the same time every month, you might want to see your dermatologist or primary doctor for a prescription treatment like birth control pills or another kind of hormonal therapy, which can level out your hormones to prevent the surges that lead to breakouts.