Dry Skin – Skin that doesn’t produce enough sebum, so it doesn’t retain moisture well and dries out. Dry skin tends to crack, peel, and become itchy, flaky, irritated or inflamed easily. Acne is caused by dead skin cells and bacteria clogging pores, while dryness tightens the pores to clog them further. The best acne face washes should exfoliate your skin, but shouldn’t dry it out further.
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).
Dear acne, you suck. Seriously, we thought the breakouts would be over soon after AP Calculus. But it’s actually something that affects women and men in their 20s and 30s, and even well past their 50s. It’s just not fair (throws childlike temper tantrum). And if you thought blackheads and whiteheads were annoying, the deep painful pimples that often pop up in adult acne are much more aggravating—and harder to get rid of. So, we talked to dermatologists to find out which acne treatments are the most effective on all types of pimples.
Efforts to better understand the mechanisms of sebum production are underway. The aim of this research is to develop medications that target and interfere with the hormones that are known to increase sebum production (e.g., IGF-1 and alpha-melanocyte-stimulating hormone). Additional sebum-lowering medications being researched include topical antiandrogens and peroxisome proliferator-activated receptor modulators. Another avenue of early-stage research has focused on how to best use laser and light therapy to selectively destroy sebum-producing glands in the skin's hair follicles in order to reduce sebum production and improve acne appearance.
Globally, acne affects approximately 650 million people, or about 9.4% of the population, as of 2010. It affects nearly 90% of people in Western societies during their teenage years, but can occur before adolescence and may persist into adulthood. While acne that first develops between the ages of 21 and 25 is uncommon, it affects 54% of women and 40% of men older than 25 years of age, and has a lifetime prevalence of 85%. About 20% of those affected have moderate or severe cases. It is slightly more common in females than males (9.8% versus 9.0%). In those over 40 years old, 1% of males and 5% of females still have problems.
Retinoids: Retinoids are substances that are derived from vitamin A, which includes retinol, but also includes synthetic versions of retinol with activated retinoic acid which tends to be more effective in treating acne. Retinoic acid has been shown to reduce sebum production8 and regulate skin cell production9, which together can greatly reduce acne. These synthetic retinoids include adapalene, tretinoin, isotretinoin, and others. Although these synthetic options are more reliably effective, they also tend to have more side effects, like burning, itching, and dryness. Unlike retinol, which is available over-the-counter, nearly all synthetic retinoids are prescription-only. One of the main exceptions is Differin, which is a brand that sells a topical gel containing adapalene, a mild synthetic retinoid, over-the-counter.
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Genetics is thought to be the primary cause of acne in 80% of cases. The role of diet and cigarette smoking is unclear, and neither cleanliness nor exposure to sunlight appear to play a part. In both sexes, hormones called androgens appear to be part of the underlying mechanism, by causing increased production of sebum. Another frequent factor is excessive growth of the bacterium Propionibacterium acnes, which is normally present on the skin.
This problem is normally located on the face, back, and upper portion of the chest. These areas are worst hit because they have the highest number of oily glands. What a lot of people don’t realize is that there are several different types of this issue. And to make matter even more complicated, each of these types have their own causes and effects as well as methods of prevention. 
A big acne myth is that you can wash it away. Although you should wash your face in the morning to rid it of any bacteria and saliva that might be lingering from your pillow, and you should wash it at night to clean away the sweat and grime that accumulated, twice a day is plenty. You also shouldn’t spend more than 30 seconds on this part of your skin care routine. Begin with warm water that is not too hot. When you are finished, you can splash your face with cold water to close the pores or use an astringent. Make sure you get a clean towel each time you wash so that you aren’t patting more bacteria onto your clean face. If you use a washcloth to clean your face, make sure you don’t reuse it.
The key is patience — don’t pick up a new cleanser and expect to see dramatic results right away. While you may be able to spot-treat a pimple or two overnight, it can take weeks before you really see a difference from switching cleansers. “It’s about trying different brands with different strengths and giving it sufficient time to work,” says Anna Avaliani, MD, a cosmetic and laser skin care specialist in NYC.
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Sulfur – Not to be confused with irritating sulfates that can be found in some cleansers and treatments, sulfur is an element that can be quite good for your skin. It removes the dead skin cells and excess oils that clog your pores. But just like any chemical ingredient, too much of it can dry your skin out. You’ll likely find it coupled with other ingredients in your cleanser, like benzoyl peroxide, salicylic acid, and resorcinol.
Also, refrain from moisturizing as you’ll want your face clear of even beneficial elements. Then, in the morning, gently press the blotting paper to the different areas of the face that you want to check. Don’t rub your skin with the paper as this will cause irritation, so instead just blot. The result will be that you’ll be able to see the amount of oil that is present in the different areas of your skin.
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