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Salicylic acid and Acne: Does it work? How does it work? Mechanism of action? Concentration? How much to use? Where do I find it? Evidence and effect? Who should use salicylic acid?

Acne is a common skincare concern in a lot of adolescents and adults, and it’s the type of concern which can prompt its sufferers to search the world for solutions and end up with barely one. Salicylic acid, however, seems to be the one true ambrosia for a lot of people going through acne bouts. It’s a beta-hydroxy acid, which has gained immense popularity due to its efficacy in the realm of skincare.

Salicylic acid is known for its properties as an exfoliant and its ability to penetrate pores filled with oil and sebum. It works by dissolving the top layer of skin, the epithelial cells: leading to unclogged pores and preventing the formation of new acne lesions. Along with that, salicylic acid shows anti-inflammatory effects, which means that it could be effective in reducing redness and swelling in pimples on your skin.

Salicylic acid is available in a multitude of different forms; however, people barely tend to apply it as a sole treatment. It is often mixed into cleansers, toners, spot treatments, masks, and other skincare products. Within these products, salicylic acid is present in concentrations ranging from 0.5% up to 2% at the maximum. The higher the concentration, the more likely it is that it would be recommended as a spot treatment.

The utility of salicylic acid is supported in multiple different studies across the world, with one example being a study titled, “A Double-Blind, Randomized, Controlled Trial of the Efficacy and Safety of 3% Salicylic Acid–Derived Polyethylene Glycol Ointment for the Treatment of Plantar Warts.” This study investigated how salicylic acid products work on severe skin conditions, and showcases the use of salicylic acid in addressing skincare problems.

Although salicylic acid is generally safe for use and is present in multiple different formulations of skincare products, some people may be better off not using these products. These people can be anyone with sensitive skin (this is why patch tests should always be conducted for skincare products) and people who are allergic salicylates or aspirin. Some notable side effects for anyone using it could include, dryness and peeling of the skin paired with irritation and a burning itch.

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