Katie Rodan, M.D., and Kathy Fields, M.D., the dermatologist founders of billion-dollar blemish brand Proactiv:
Acne is the #1 skin disease in the world—in the U.S., 85 percent of people have it sometime in their lives.
They might do a number on your waistline, but sweets like chocolate and soda, and greasy foods like French fries don’t cause acne.
It may seem like the sun dries up your pimples, but sun exposure actually makes acne worse over time: Your skin sheds the UV-damaged cells, which clog pores and can trigger breakouts.
The dark spots that appear on skin after a blemish are called post-inflammatory hyperpigmentation: Unlike acne scars, they’re not permanent but can take weeks to heal.
Don’t spot treat: The red pimple that erupts on your skin is actually the last stage of a blemish’s life. Always treat your whole face to attack acne at every stage (even when it’s not yet visible).
Keep products with the zit-fighting ingredient benzoyl peroxide away from clothes and fabrics; it’s oxidizing action will bleach them.
Avoid facial scrubs with ground fruit or nut bits, like apricot pits or walnut, when trying to deep-clean skin: Their sharp edges can make micro-tears in your skin, causing further inflammation and irritation.
Don’t wash your face more than twice a day: Stripping your skin of oil prompts your body to produce more, exacerbating acne and oiliness.