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In the sections that follow, we'll explore each benefit in detail, sharing the evidence behind them and the real-life improvements our clients experience

Korean formulas tend to prioritize tolerability and layering, and are frequently paired with soothing ingredients like Centella asiatica (cica), niacinamide, or hyaluronic acid, says Sarah Sheu, MD, a board-certified dermatologist based in Maple Valley, Washington

Tip Oral glutathione may lighten skin spots, but effects are temporary and dependent on consistent intake

The FDA has flagged BPC-157 because of risks like immunogenicity (it could trigger immune reactions), peptide impurities, and lack of human safety data

Available in capsule, tablet, and liquid forms, these supplements are typically taken orally and aim to increase intracellular glutathione levels gradually over time