Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Sulphur has a long history of use in dermatology, and its efficacy in treating dry, flaky skin and related conditions is supported by modern scientific evidence. Topical sulphur is most commonly used in the treatment of conditions such as acne, seborrheic dermatitis, and psoriasis, all of which may present with dry, flaky, or scaly skin. Sulphur works primarily through its keratolytic (exfoliating) and antimicrobial properties. It helps to remove excess keratin, a protein that can build up and contribute to dryness and flakiness, thereby promoting shedding of the stratum corneum (outermost layer of the skin). Additionally, sulphur possesses mild antibacterial and antifungal effects, which contribute to its benefit in skin conditions with a microbial component.

Multiple clinical guidelines and dermatology reviews acknowledge the use of topical sulphur preparations (typically 2-10%) for mild to moderate seborrheic dermatitis and as an adjunct in acne management. Studies have demonstrated that sulphur can reduce scaling and improve hydration of the skin when used appropriately. However, sulphur can be irritating or drying for some individuals, so careful formulation and use are important. Overall, while not always a first-line treatment, sulphur’s use is supported by a combination of historical use and scientific studies, earning it a high evidence rating for treating dry and flaky skin, especially in the context of specific dermatological conditions.

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