This is a gentle niacinamide serum developed for sensitive and fragile skin. It adopts a niacinamide formula with a friendly low concentration, avoiding burning, redness and intolerance caused by high concentration, while retaining the core benefits of brightening, oil control and pore refining. Niacinamide helps even skin tone, improve dull yellowing and acne mark pigmentation, regulate sebum secretion, and improve the visual appearance of oily shine and enlarged pores. The formula is specially compounded with multiple soothing repair ingredients including asiaticoside, ceramide, panthenol and dipotassium glycyrrhizinate to simultaneously strengthen the skin barrier, soothe redness discomfort, greatly reduce the irritation risk of niacinamide, and improve sensitive skin tolerance. Alcohol-free, fragrance-free and free of irritating preservatives, the formula is streamlined and efficient, suitable for mildly sensitive skin, barrier-damaged skin and niacinamide-intolerant skin. It has a fresh watery serum texture, absorbs quickly and is non-sticky. It is recommended to start with 2-3 times a week to gradually build tolerance, then use morning and evening. Long-term use can evenly brighten skin tone, refine pores and improve redness, leaving the skin in a clean, clear and healthy state.