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Most gentle cleansers, serums, and carriers fall within acceptable ranges
For skin, hair, and broader anti-ageing repair goals rather than acute injury, GHK-Cu for Wound Healing and Recovery covers a copper-peptide alternative with a different mechanism
Pure and Applied Chemistry
Injection Site Reactions Although typically mild, improper technique or contaminated products can lead to: Localized infections Bruising, swelling, or tissue irritation Subcutaneous nodules or lumps from repeated injections in the same area These issues are almost always linked to poor sterility practices , expired reconstituted peptides, or repeated use of the same injection site without rotation
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