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Chitosan (CS), low molecular weight (The degree of deacetylation is 98%), was purchased from Industrial Manufacturing Co., Tokyo, Japan
One outlier, however, is the potential for different immunological reactions individuals allergic to beef may tolerate horse-derived proteins better, though this remains a niche advantage
The Kuceki 2025 study demonstrated significant results (26.5% improvement) using microneedling combined with copper peptide serums, and the Gupta 2022 meta-analysis confirmed microneedling's efficacy across multiple studies
But our other recommendations are effective in their own rights
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