Warning: Sulfur smells like rotten eggs. But it is an effective ingredient at drying up pus-filled pimples and whiteheads (you’ve gotta take the good with the bad). It works by sucking up the oil. Sulfur is typically mixed with other active ingredients to get the most efficacy and fragrances to mask the strong scent. You can often find it in masks and spot treatments.
Like baby acne, eczema is very common in newborns, but it’s usually caused by dry (not oily) skin. Mild eczema can cause lots of small bumps, similar to baby acne. Since it often starts on the cheeks, it’s easy to confuse with baby acne. But, if it spreads into a rash that covers the skin or develops in other areas of your baby’s body, such as the folds of his elbows and knees, then it’s probably eczema, not acne. Eczema isn’t usually serious. You can treat it by using a gentle hydrating lotion on your baby’s skin after bathtime.
“You unfortunately cannot determine the strength of a product strictly by the percentage of its active ingredients because how well a product works depends on how well its inactive ingredients help it penetrate the skin,” explains Dr. Green. “In other words, a 2 percent benzoyl peroxide may be more effective than another brand’s 5 percent benzoyl peroxide because there are other ingredients helping out.”
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.
Postinflammatory hyperpigmentation (PIH) is usually the result of nodular acne lesions. These lesions often leave behind an inflamed darkened mark after the original acne lesion has resolved. This inflammation stimulates specialized pigment-producing skin cells (known as melanocytes) to produce more melanin pigment which leads to the skin's darkened appearance. People with darker skin color are more frequently affected by this condition. Pigmented scar is a common term used for PIH, but is misleading as it suggests the color change is permanent. Often, PIH can be prevented by avoiding any aggravation of the nodule, and can fade with time. However, untreated PIH can last for months, years, or even be permanent if deeper layers of skin are affected. Even minimal skin exposure to the sun's ultraviolet rays can sustain hyperpigmentation. Daily use of SPF 15 or higher sunscreen can minimize such a risk.
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.