The Ordinary Niacinamide 10% + Zinc 1% is a water-based serum that boosts skin brightness, improves skin smoothness, and reinforces the skin barrier over time. It contains a high 10% concentration of Niacinamide (vitamin B3) and zinc PCA. The serum is suitable for all skin types and is vegan, gluten-free, cruelty-free, alcohol-free, oil-free, and silicone-free. It is a hydrating lightweight serum that improves the look of skin radiance and luminosity, and it hydrates the skin by reinforcing the skin barrier in as little as 7 days. It can be used in the morning and evening, and it is recommended to use it after cleansing, before any anhydrous serums, oils, suspensions, or creams. The product should be used within 12 months after opening and should not be used with direct or indirect vitamin C. If irritation occurs, the product should be rinsed off, and use should be ceased. Patch testing prior to use is advised
. As for the other products, the information provided is not as detailed as the information for The Ordinary Niacinamide 10% + Zinc 1%. Therefore, for more specific details about other niacinamide face serums, it is recommended to refer to the respective product websites or contact the manufacturers directly.
