Acne
Many factors contribute to the onset of acne, including heredity, diet and skin type. Acne results from the obstruction of a pore and overactive sebaceous glands that produce excess sebum. Sebum that cannot properly flow through a pore collects and forms a papule or pustule, resulting in blackheads or pimples. Pores that are closer together are more likely to have sebum collect in them, leading to a higher incidence of pimples; because if this, acne is more common on the chin, jawline, nose and forehead, than on the cheeks. Cystic acne is most persistent, and leads to severe scarring. It is characterized by nodules that remain under the skin for days or weeks, and rarely become whiteheads. Salicylic acid is ineffective for this type of acne; consult a dermatologist for prescription medications to treat cystic acne lesions. Mild and moderate acne, however, can be treated with salicylic acid and benzoyl peroxide.
Salicylic Acid
Over-the-counter products containing salicylic acid are available to treat acne. Salicylic acid is a weak beta-hydroxy acid, with many medicinal and cosmetic applications, including treatment of dandruff, warts and acne. It is available in various strengths, and appropriate concentrations are to be used for each ailment. For acne, concentrations should not exceed 2 percent, which is available without a prescription. Higher concentrations of salicylic acid are typically used to treat ailments other than acne.
Salicylic Acid & Acne
Salicylic acid is used to treat mild to moderate acne. It can be potentially damaging to skin in high concentrations, but is helpful in low concentrations (0.5 to 2 percent). As a beta-hydroxy acid with mild exfoliating properties, salicylic acid increases cell-turnover on the skin, and helps unclog pores. Unlike the over-the-counter ingredient benzoyl peroxide, salicylic acid penetrates into pores to essentially exfoliate the "walls" of the pores, and eliminate the clogging residue that causes acne. For this reason, it is particularly effective against comedonal acne, or blackheads. Benzoyl peroxide kills bacteria on the skin's surface, and can be used in conjunction with salicylic acid for a comprehensive over-the-counter acne regimen. Salicylic acid removes the pore-clogging residue, and benzoyl peroxide kills the bacteria when it comes to the surface. Salicylic acid products must be used continuously to prevent acne on acne-prone skin. Use the lowest possible concentration to avoid irritation.
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