Wear sunscreen everyday and do not tan. Ultraviolet Radiation is the number one cause of premature aging. It also leads to skin cancer in high enough doses. Treat the sun like the death ray that it is. Exposing your skin to harmful UVA and UVB rays damages skin and prolongs post inflammatory erythema(PIE)--red acne marks, as the sunlight stimulates pigment-producing cells.
How to Handle It: Think of these as bigger, pissed-off whiteheads. Your best bet, says Zeichner, is to stock up on benzoyl peroxide, which kills the bacteria. A spot treatment like Murad Acne Spot Fast Fix ($22) should do the trick. Also, try not to pop them — as tempting as that may be. Since they're inflamed, they're more likely to scar if you go the DIY route.

Inside your hair follicles, there are small glands producing oil called sebum. This oil mixes with skin cells in the follicle and joins them on the journey outward. But when there's too much sebum, too many dead skin cells or something on the surface that blocks their exit from the follicle, a blockage can occur. Bacteria joins the party, and the result is acne vulgaris, the most common form of acne.

Does your infant have more pimples than an eighth-grader? Just when she seems ready for her close-up — head rounding out nicely, eyes less puffy and squinty — baby acne might be next. This pimply preview of puberty is incredibly common, usually beginning at 2 to 3 weeks of age and affecting about 40 percent of all newborns. Fortunately it’s temporary, and it doesn’t bother your baby a bit. Here’s what to do in the meantime.
The relationship between diet and acne is unclear, as there is no high-quality evidence that establishes any definitive link between them.[52] High-glycemic-load diets have been found to have different degrees of effect on acne severity.[7][53][54] Multiple randomized controlled trials and nonrandomized studies have found a lower-glycemic-load diet to be effective in reducing acne.[53] There is weak observational evidence suggesting that dairy milk consumption is positively associated with a higher frequency and severity of acne.[51][52][53][55][56] Milk contains whey protein and hormones such as bovine IGF-1 and precursors of dihydrotestosterone.[53] These components are hypothesized to promote the effects of insulin and IGF-1 and thereby increase the production of androgen hormones, sebum, and promote the formation of comedones.[53] Available evidence does not support a link between eating chocolate or salt and acne severity.[52][55] Chocolate does contain varying amounts of sugar, which can lead to a high glycemic load, and it can be made with or without milk. Few studies have examined the relationship between obesity and acne.[2] Vitamin B12 may trigger skin outbreaks similar to acne (acneiform eruptions), or worsen existing acne, when taken in doses exceeding the recommended daily intake.[57] Eating greasy foods does not increase acne nor make it worse.[58][59]
Blemishes on your new baby's face aren't necessarily acne, however. Tiny white bumps that are there at birth and disappear within a few weeks are called milia, and they're not related to acne. If the irritation looks more rashy or scaly than pimply, or it appears elsewhere on your baby's body, he may have another condition, such as cradle cap or eczema.
Risk factors for the development of acne, other than genetics, have not been conclusively identified. Possible secondary contributors include hormones, infections, diet and stress. Studies investigating the impact of smoking on the incidence and severity of acne have been inconclusive.[2][38][39] Sunlight and cleanliness are not associated with acne.[14]

Ablative lasers deliver an intense wavelength of light to the skin, removing thin outer layers of the skin (epidermis). In addition, collagen production is stimulated in the underlying layer (the dermis). Patients are typically numbed with local anesthetic and the ablation is done as an outpatient procedure. CO2 and erbium are the ablative lasers most often used for acne scar treatment.
Bacteria. Excess sebum clogs the openings to hair follicles -- especially those on the face, neck, chest, and back. Bacteria grow in these clogged follicles. This makes blackheads or whiteheads, also known as ''comedones,'' form on the skin's surface. Sometimes, this clogging causes the follicle wall to break under the pressure of this buildup. When this happens, sebum leaks into nearby tissues and forms a pustule or a papule -- this is called inflammatory acne. Larger, tender pustules are called nodules.
Diet. Studies indicate that certain dietary factors, including skim milk and carbohydrate-rich foods — such as bread, bagels and chips — may worsen acne. Chocolate has long been suspected of making acne worse. A small study of 14 men with acne showed that eating chocolate was related to a worsening of symptoms. Further study is needed to examine why this happens and whether people with acne would benefit from following specific dietary restrictions.