From the What to Expect editorial team and Heidi Murkoff, author of What to Expect the First Year. Health information on this site is based on peer-reviewed medical journals and highly respected health organizations and institutions including ACOG (American College of Obstetricians and Gynecologists), CDC (Centers for Disease Control and Prevention) and AAP (American Academy of Pediatrics), as well as the What to Expect books by Heidi Murkoff.
Keep in mind that even if some products market themselves toward severe acne breakouts, all the kits we looked at are definitely designed for mild to moderate acne. Not sure if you fit on that scale? You’re not alone! When you’re in the middle of a breakout, all acne seems severe, so it can be difficult to self-diagnose your symptoms. We talked to dermatologists and cosmetic chemists to better understand the differences between the various types of acne (see below).

Baby acne generally lasts longer with breast-fed babies, since the same residual, oil-triggering hormones that the baby was exposed to in the uterus can come through the mother's milk, too. As a result, it often begins clearing up as your baby is weened off of breast-milk. It may even clear up sooner if your baby's oil glands have matured enough to handle the hormones before then.

Shower twice a day. Take a shower or bath in the morning and at night. Alternatively, take a shower in the morning and then again after physical activity, like exercise, or sweating. Wash your entire body with a mild cleanser and use shampoos that limit oil production in your hair. Be sure to always shower after exercising to remove the dead skin cells your body has sloughed off through sweating.
What's Going On: You might be all too familiar with these, which tend to make their debut when you’re in high school. "Blackheads, like whiteheads, are blocked pores," says Zeichner. What gives them their namesake color, though, is the oil. It's already dark, but blackheads also have a larger opening at the surface than whiteheads do, meaning air can enter and oxidize that oil sitting inside the pore, turning it even darker.

The recognition and characterization of acne progressed in 1776 when Josef Plenck (an Austrian physician) published a book that proposed the novel concept of classifying skin diseases by their elementary (initial) lesions.[163] In 1808 the English dermatologist Robert Willan refined Plenck's work by providing the first detailed descriptions of several skin disorders using a morphologic terminology that remains in use today.[163] Thomas Bateman continued and expanded on Robert Willan's work as his student and provided the first descriptions and illustrations of acne accepted as accurate by modern dermatologists.[163] Erasmus Wilson, in 1842, was the first to make the distinction between acne vulgaris and rosacea.[164] The first professional medical monograph dedicated entirely to acne was written by Lucius Duncan Bulkley and published in New York in 1885.[165][166]

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Tea tree oil is renowned for being good for your skin. In addition to this, it also contains anti-bacterial and anti-fungal properties, which makes it highly beneficial for acne treatment. In fact, studies that compare tea tree oil to the acne medication benzoyl peroxide shows it to be just as effective. But please remember to dilute tea tree oil before you use it; otherwise, your skin may get irritated.

The use of antimicrobial peptides against C. acnes is under investigation as a treatment for acne to overcoming antibiotic resistance.[10] In 2007, the first genome sequencing of a C. acnes bacteriophage (PA6) was reported. The authors proposed applying this research toward development of bacteriophage therapy as an acne treatment in order to overcome the problems associated with long-term antibiotic therapy such as bacterial resistance.[178] Oral and topical probiotics are also being evaluated as treatments for acne.[179] Probiotics have been hypothesized to have therapeutic effects for those affected by acne due to their ability to decrease skin inflammation and improve skin moisture by increasing the skin's ceramide content.[179] As of 2014, studies examining the effects of probiotics on acne in humans were limited.[179]

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Exercise regularly. Exercising does a number of things to help reduce your acne. It releases endorphins which lower stress levels and therefore reduce oil-production and also makes you sweat which cleans out dead skin cells. Try exercising on a daily basis for a minimum of thirty minutes to help reduce your acne not only on your face, but also on your chest, shoulders, and back; which is where the term "bacne" comes from.
Antibiotics are an acne treatment used to kill acne-causing bacteria. They may be applied directly on the skin (topical) or taken by mouth (oral). Topical antibiotics kill bacteria in the upper portion of your pores, while oral antibiotics can reach to the lower depths of the pores. Antibiotics used for acne treatment include clindamycin or tetracyclines like doxycycline or minocycline. These antibiotics are the most effective for treating acne because they both kill bacteria and act as anti-inflammatory agents to calm down the skin.
Isotretinoin is an oral retinoid that is very effective for severe nodular acne, and moderate acne that is stubborn to other treatments.[1][20] One to two months use is typically adequate to see improvement. Acne often resolves completely or is much milder after a 4–6 month course of oral isotretinoin.[1] After a single course, about 80% of people report an improvement, with more than 50% reporting complete remission.[20] About 20% of patients require a second course.[20] Concerns have emerged that isotretinoin use is linked with an increased risk of adverse effects, like depression, suicidality, anemia, although there is no clear evidence to support some of these claims.[1][20] Isotretinoin is superior to antibiotics or placebo in reducing acne lesions.[17] The frequency of adverse events was about twice as high with isotretinoin, although these were mostly dryness-related events.[17] No increased risk of suicide or depression was conclusively found.[17] Isotretinoin use in women of childbearing age is regulated due to its known harmful effects in pregnancy.[20] For such a woman to be considered a candidate for isotretinoin, she must have a confirmed negative pregnancy test and use an effective form of birth control.[20] In 2008, the United States started the iPLEDGE program to prevent isotretinoin use during pregnancy.[84] iPledge requires the woman under consideration for isotretinoin therapy to have two negative pregnancy tests and mandates the use of two types of birth control for at least one month before therapy begins and one month after therapy is complete.[84] The effectiveness of the iPledge program has been questioned due to continued instances of contraception nonadherence.[84][85]

And though none of the experts we spoke to specifically called this out, writer Frankie May Wong declared this salicylic-acid-enhanced Medik8 gel as her cystic-acne Holy Grail. She uses it sparingly to avoid it losing its efficacy, but thanks its blend of acne-fighting ingredients for her clear skin and the lack of scarring thereafter: “Another reason the Beta Gel seemed to work miracles could’ve been the combination of dioic acid (a rarer ingredient that otherwise only appears in the pricey but raved-about SkinCeuticals Blemish + Age Defense serum), azelaic acid, and niacinamide.”
A 2013 study on acne vulgaris in The Nurse Practitioner concurred that a multidimensional approach to acne is usually necessary because most people have a combination of symptoms. Based on the advice of dermatologists and aestheticians, we turned our focus to regimen sets, analyzing the ingredients of more than 40 kits before finding our top picks.
Retinoids and retinoid-like drugs. These come as creams, gels and lotions. Retinoid drugs are derived from vitamin A and include tretinoin (Avita, Retin-A, others), adapalene (Differin) and tazarotene (Tazorac, Avage). You apply this medication in the evening, beginning with three times a week, then daily as your skin becomes used to it. It works by preventing plugging of the hair follicles.
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