<p>Lactic acid: It is commonly used for lubricating and moisturising skin, thus relieving dryness and itch.<br />
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Sodium PCA: It is a keratolytic agent. It encourages exfoliation of the skin and opening up of the plugged follicles, which helps re-establish the normal skin- cell replacement cycle. For milder acne, salicylic acid helps unclog pores to resolve and prevent lesions.</p>