C. acnes also provokes skin inflammation by altering the fatty composition of oily sebum.[45] Oxidation of the lipid squalene by C. acnes is of particular importance. Squalene oxidation activates NF-κB (a protein complex) and consequently increases IL-1α levels.[45] Additionally, squalene oxidation leads to increased activity of the 5-lipoxygenase enzyme responsible for conversion of arachidonic acid to leukotriene B4 (LTB4).[45] LTB4 promotes skin inflammation by acting on the peroxisome proliferator-activated receptor alpha (PPARα) protein.[45] PPARα increases activity of activator protein 1 (AP-1) and NF-κB, thereby leading to the recruitment of inflammatory T cells.[45] The inflammatory properties of C. acnes can be further explained by the bacterium's ability to convert sebum triglycerides to pro-inflammatory free fatty acids via secretion of the enzyme lipase.[45] These free fatty acids spur production of cathelicidin, HBD1, and HBD2, thus leading to further inflammation.[45]
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Use oil-free makeup. If you wear makeup, you may be stuck in a vicious cycle of covering up acne while simultaneously causing it with your cover-up usage. Find acne-fighting oil-free mineral makeup to help prevent worsening your acne while simply trying to hide it. Power foundations are also recommended. When possible, avoid wearing make-up at all though as it clogs your pores over the course of the day.
Baby acne is a common condition that affects many babies within several weeks to several months of age. Most pediatricians agree that the best treatment for baby acne is nothing at all, since the condition is natural and will clear up quickly enough as long as the baby's face is gently washed. Under severe conditions, though, your baby's doctor may recommend a stronger treatment. Here's what you need to know about getting rid of baby acne.

Not only can the sun prolong PIE appearance, it can lead to premature aging including sun spots, fine lines, and wrinkles. UV damage is DNA damage. Sunscreen is an anti-aging must for all ages young and old--preventing future skin cancer. It is the fountain of youth in a bottle. Prevention is better than treatment. There is no such thing as safe tanning, as tanning is the result of sun damage.
Flutamide, a pure antagonist of the androgen receptor, is effective in the treatment of acne in women.[101][108] It has generally been found to reduce symptoms of acne by 80 or 90% even at low doses, with several studies showing complete acne clearance.[101][109][110] In one study, flutamide decreased acne scores by 80% within 3 months, whereas spironolactone decreased symptoms by only 40% in the same time period.[110][111][112] In a large long-term study, 97% of women reported satisfaction with the control of their acne with flutamide.[113] Although effective, flutamide has a risk of serious liver toxicity, and cases of death in women taking even low doses of the medication to treat androgen-dependent skin and hair conditions have occurred.[114] As such, the use of flutamide for acne has become increasingly limited,[113][115][116] and it has been argued that continued use of flutamide for such purposes is unethical.[114] Bicalutamide, a pure androgen receptor antagonist with the same mechanism as flutamide and with comparable or superior antiandrogenic efficacy but without its risk of liver toxicity, is a potential alternative to flutamide in the treatment of androgen-dependent skin and hair conditions in women.[106][117][118][119]

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Back acne (sometimes called "bacne") is a potentially embarrassing and sometimes painful condition where clogged hair follicles on the back cause pimples and blackheads. Back acne can be caused by the same factors as other types of acne: diet, hormones, certain medications, genetics or any combination thereof. But when you're considering how to get rid of back acne, also remember that most people have their back covered the majority of the day. The clothing we wear matters, and the way in which we wash the skin on our back is key for clear skin, the whole body over. Learn more about common back acne causes, the best acne products for your body, and how to prevent acne on the back from returning in this section.

Hypertrophic scars are uncommon, and are characterized by increased collagen content after the abnormal healing response.[32] They are described as firm and raised from the skin.[32][34] Hypertrophic scars remain within the original margins of the wound, whereas keloid scars can form scar tissue outside of these borders.[32] Keloid scars from acne occur more often in men and people with darker skin, and usually occur on the trunk of the body.[32]

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.[164] 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.[164] 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.[164] Erasmus Wilson, in 1842, was the first to make the distinction between acne vulgaris and rosacea.[165] The first professional medical monograph dedicated entirely to acne was written by Lucius Duncan Bulkley and published in New York in 1885.[166][167]


There are two big guns used to take down acne, and they're both great at doing entirely different things. Salicylic acid is a beta hydroxy acid that comes from willow bark and works primarily as an exfoliator, breaking down fatty acids like sebum so your pores don’t clog. (Glycolic acid works similarly but is less effective.) These acids are effective on comedones — whiteheads, blackheads, and other non-red bumps.
You’ve probably heard of the benefits of retinoid creams for anti-aging, but vitamin A is also efficient at clearing up acne. “[Retinoids] cause skin cells to turn over at a faster rate, decrease oil production, and help skin exfoliate,” board-certified dermatologist Rita Linkner, M.D., tells SELF. Another benefit: Acne is inflammation, and retinoids are anti-inflammatory.

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.
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Because baby acne typically disappears on its own within several months, no medical treatment is usually recommended. If your baby's acne lingers for much longer, your baby's doctor may recommend a medicated cream or other treatment. Don't try any over-the-counter medications without checking with your baby's doctor first. Some of these products may be damaging to a baby's delicate skin.
There has been a long-observed link between higher stress levels and the incidence of breakouts, and studies have shown that stress can worsen acne’s frequency and severity. Sebaceous glands contain receptors for stress hormones, making them upregulated and kicking sebum production into overdrive. Unfortunately, those with stress sometimes fall victim to a vicious acne cycle. Anxious types have a tendency to pick their skin and pop pimples under stress. This bad habit can exacerbate blemishes by pushing the buildup deeper into the pore, inducing cellular damage, rupturing cellular walls, and spreading bacteria. In extreme cases, sometimes people become so worried or embarrassed about their skin that they compulsively pick at every little thing that shows up. This condition is called acne excoriee, and can turn mild acne into severe scars.
Most studies of acne drugs have involved people 12 years of age or older. Increasingly, younger children are getting acne as well. In one study of 365 girls ages 9 to 10, 78 percent of them had acne lesions. If your child has acne, consider consulting a pediatric dermatologist. Ask about drugs to avoid in children, appropriate doses, drug interactions, side effects, and how treatment may affect a child's growth and development.
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