Which ingredient is effective in dissolving dead cells on the skin's surface?

Sulphur is known for its keratolytic properties, meaning it effectively helps to dissolve and remove dead skin cells from the surface. This property allows sulphur to aid in exfoliation and is particularly beneficial for conditions such as acne or oily skin where the buildup of dead cells can lead to clogged pores and skin issues.

In contrast, the other ingredients listed do not primarily serve the function of dissolving dead skin cells. Benzoic acid, for example, is often used for its antifungal properties rather than as a skin exfoliant. Aloe vera is praised for its soothing and moisturizing effects but does not have significant exfoliating properties. Similarly, shea butter is mainly known for its emollient qualities that hydrate the skin and provide a protective barrier rather than removing dead skin cells.