Can I use this soap alongside my usual acne treatments like salicylic acid, retinoids, or benzoyl peroxide?

Sulphur provides mild keratolytic and sebum-regulating effects on its own. Layering it in the same routine with leave-on actives (salicylic acid toners, retinoid serums, benzoyl peroxide gels) often leads to cumulative irritation — redness, peeling, stinging — because all of them accelerate cell turnover or reduce surface lipids. A practical schedule: use the sulphur soap on "off" nights from your leave-on actives, or use the soap in the morning and the active in the evening (or vice versa) if your skin tolerates twice-daily cleansing. Always apply a fragrance-free moisturiser after rinsing, and use broad-spectrum SPF 30+ during the day, as exfoliated skin is more UV-sensitive. If you are on prescription topical or oral acne medication, check with your prescriber before adding any new cleanser. This soap is a cosmetic cleanser, not a treatment, and does not replace prescribed therapy.