Hiểu được mụn trứng cá là gì. Hiểu rõ về nám, tàn nhang. Tham khảo ý kiến bác sĩ.

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If your reason for wanting clear skin is because of acne, learn about the condition. Your skin has a large number of glands and ducts (pores) surrounding hair follicles. Hair follicles or pores can get clogged with dried sebum (a natural skin oil), skin debris, bacteria, or dead skin cells. This causes acne, which can appear on your face, back, neck, shoulders, and chest. Acne includes blackheads (open comedones), whiteheads (closed comedones), pimples (pus-filled pores), pustules (large pimples), cysts, and abscesses. Cysts and abscesses are the deepest and most severe form of acne.  Acne usually begins during puberty because hormones, especially testosterone, increase and stimulate sebum production.  Acne can worsen from many kinds of makeup, especially those that are oil-based. Mild acne constitutes fewer than twenty non-inflamed blackheads or whiteheads or less than twenty mildly inflamed, irritated pimples. You can treat mild acne at home with good cleansing techniques. See Clean Oily Skin. A trained physician or dermatologist should treat moderate and severe acne. Moderate acne means you have more than twenty to one hundred comedones or pimples, with fifteen to fifty being inflamed or infected. Severe acne sufferers have more than one hundred comedones, pimples, pustules, nodules, and at least five cysts. Dark spots can occur on your face from acne, excessive sun exposure, or hormonal imbalances. These brown spots result from inflammation, which increases melanin production and leads to hyperpigmentation. Increased estrogen from pregnancy or birth control pills can cause melasma (muddy-looking splotches) after sun exposure.  Wear sunscreen with titanium oxide or zinc oxide. Avoid direct sun exposure to prevent dark spots. Avoid dark spots from acne by treating pimples with 1% hydrocortisone cream to reduce inflammation. If your skin condition, whether acne or dark spots, is moderate to severe or affects your self-esteem, see a dermatologist. Your dermatologist can recommend treatment options to...