India, Dec. 14 -- Dull skin isn't always about dryness, acne, or lack of hydration. In most cases, it's a simple buildup of dead skin cells sitting on the surface. When these cells accumulate, they scatter light instead of reflecting it, making the skin appear tired and uneven, regardless of how many serums you layer on. If your glow has faded or your skincare routine suddenly feels ineffective, this buildup is usually the reason. Glycolic acid toner is known as one of the most effective AHAs. Its small molecular size allows it to reach the outer layer of the skin quickly and break down the bonds that hold these dull cells together.

The result? It works by removing dead skin cells from the surface, which can help tone your skin and impro...