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Key Takeaways Peptide shelf life depends on storage conditions, especially temperature, light exposure, moisture, and contamination risk

This growth trajectory is largely attributed to rising consumer demand for anti-aging skincare solutions and the proven efficacy of GHK-Cu peptides in stimulating collagen production and skin repair

copper toxicity from cosmetic use has not been reported, but those with Wilson's disease or who are pregnant should seek medical advice

Although researchers did not observe significant changes in body weight, body mass index (BMI), waist-to-hip ratio, lean body mass, or total body fat percentage, participants demonstrated improvements in several measures of muscle strength and muscular endurance (2)