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Conclusion Combining collagen and glutathione is a smart, science-backed way to support your body from the inside out
Taking glutathione alone isn't wrong, but it leaves a well-documented synergy on the table
The realistic expectation is hydration improvement visible within 48 hours, surface texture refinement by week 4, fine-line softening from week 8, and cumulative collagen-driven firmness from month 3 onward, sustained through bi-weekly sessions over 4 to 6 months
doi:10.1097/00042737-200502000-00002 [PubMed] [Crosslink] Fontana RJ, Hayashi PH, Gu J, et al
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