What is the primary effect of keratolytics on the skin?

Keratolytics primarily function by destroying and softening the outer layer of skin, which is known as the stratum corneum. These compounds work by breaking down the bonds between skin cells, leading to the sloughing off of dead skin and promoting exfoliation. This is particularly useful in treating conditions where there is an excessive buildup of skin, such as psoriasis or keratosis. By facilitating the removal of this outer layer, keratolytics can help to prevent clogged pores and minimize the appearance of rough or scaly skin, ultimately leading to smoother skin and improved absorption of topical treatments.

Other options represent different functions not specific to keratolytics. For instance, hydrating agents focus on moisture retention, protective barriers aim to shield the skin from irritants and pathogens, and stimulants for new cell growth generally refer to different categories of skincare products, such as retinoids. Thus, while all these effects can play a role in skincare, the distinctive feature of keratolytics is their ability to effectively break down and soften the outer layer of the skin.