First off, let's talk about why you're getting acne. Acne is a skin disease where your natural skin oil, mixed with dirt and grime block your skin's pores. When those pores get blocked, they can get inflamed and then turn into pimples. Acne, is just collection of pimples that usually form on your face, shoulders, back, and chest. Some people's bodies are more prone to get acne than others. Whether due to genetics, hygiene, fluctuating hormones (pregnancy or puberty), stress, or other factors, some people just get acne and other just don't.
As an adult, it's important to know the cause of your acne so you know the right cure to choose. If your acne is forming because environmental (physical or emotional) its important to know so you can remove or reduce them. Some factors can be completely temporary, for example if your work is stressing you out because a once-in-a-lifetime opportunity popped up, you could be getting acne because of that stress and once that stressor is gone, your acne will naturally go away. If you are constantly in environment with lots of sweat, dirt, grime, and residue that can potentially clog your pores, you could be getting acne from that. Solutions for that type of situation would be to cleanse your skin thoroughly more often to reduce acne break outs.
Your cure for adult onset acne can either be through natural or traditional solutions. Naturally, you can cure your acne through proper diet and exercise. Many people, especially those prone to acne, tend to not drink enough water and also eat too many unhealthy foods. If you aren't drinking your 8 glasses of water a day, do it! Many illnesses and skin problems can easily be prevented with drinking your water every day. Water helps cleanse your body internally of toxins and chemicals acquired through every day living. Also, if you're eating fast food more than once a week, replace that terribly unhealthy food with a portion of fruits and veggies from the supermarket. Vegetables like carrots (baby carrots are awesome for people on the go) have vitamins and minerals great for taking care of your skin. With a diet with vegetables you'll see a noticeable difference in your skin's appearance as well as how much energy you have each day.
Traditional acne treatments range in quality and strength and can be found in your local drugstore as a topical cream or from your dermatologist as a prescription. For most people, the cures found at Walmart is more than enough for getting rid of their acne (especially when paired with a healthy diet and living). If you're getting severe acne, especially acne that's very painful and infected, you should see your dermatologist to get it cured. Failure to treat severe acne quickly can cause permanent scars on your face and body.