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GHK-Cu improved collagen production in 70% of women treated, compared to 50% for vitamin C and 40% for retinoic acid
Furthermore, SCFAs upregulate the expression of Foxp3, a key transcription factor for regulatory T cells, through HDAC inhibition (208, 209), promoting Treg differentiation and suppressing the production of pro-inflammatory cytokines (210)
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However, any foods high in cysteine will help increase glutathione levels
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