l-glutathione and reduced glutathione L-Glutathione, Xcellent C 120 C

Xcellent C 120 C

What people often call “purging” with niacinamide on dark skin is usually: Skin already irritated from other actives A formula laced with fragrance or drying alcohol A barrier that was barely holding it together before niacinamide arrived Signs to watch for on melanin-rich skin: Burning or heat that lasts beyond a few seconds Tightness that doesn’t ease once moisturiser goes on Dark marks getting sharper or spreading rather than gradually softening If that’s happening: Cut back usage to a few times a week Strip your routine down to cleanser + moisturiser + SPF + niacinamide for a while If things still feel off, you may need a different formula or a different ingredient entirely Niacinamide should feel like support, not a test of endurance

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Robust mixed models were used to analyze the PVT data due to the presence of outliers