How often is it good to take a sulfur soap bath?

Generally, it is recommended to use sulfur soap for bathing 1–3 times per week. The detailed explanation is as follows:

Sulfur soap is a type of soap that contains added sulfur. Sulfur possesses various pharmacological properties; it can not only inhibit sebum secretion but also effectively kill bacteria, fungi, mites, and molds. However, it's important to note that sulfur soap has a strong degreasing and cleansing ability and is somewhat alkaline. Therefore, long-term or continuous usage is not recommended, as it may damage the skin's barrier function, alter the skin surface's pH value, and potentially cause dryness or irritation. Hence, it is generally advised to use sulfur soap 1–2 times per week.

For individuals with oily skin or more severe skin conditions, such as folliculitis or seborrheic dermatitis, the frequency of use may be appropriately increased to 2–3 times weekly under a doctor's guidance. However, overuse should be avoided. After using sulfur soap, it's important to promptly replenish moisture and maintain skin hydration to preserve the skin's oil-water balance. During the use of sulfur soap, skin reactions should be closely monitored. If allergic reactions such as redness, itching, or rash occur, usage should be immediately discontinued and medical attention sought.