What role does niacinamide play in a rinse-off body cleanser?

Niacinamide (vitamin B3) is a well-studied cosmetic active known for helping maintain the skin barrier, improving the look of uneven texture, and reducing the appearance of enlarged pores. In a leave-on product (lotion, serum) it has prolonged contact time. In a rinse-off cleanser, contact time is shorter — typically 1–3 minutes while lathering and rinsing — but niacinamide is water-soluble and can still interact with the stratum corneum during that window. The inclusion here complements the other barrier-supportive ingredients (squalane, almond oil, inulin) to make the overall cleansing experience less disruptive to the skin's natural lipid layer. It is not a treatment for any skin condition; think of it as a supportive ingredient that elevates a basic wash into something more conditioning. If you have a diagnosed skin condition (eczema, psoriasis, contact dermatitis), consult a dermatologist before adding new products to your routine.