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Systemic injection (into abdominal fat or another convenient site) allows the peptide to distribute throughout the body and migrate to damaged areas
How They Differ: Mechanism and Primary Uses The easiest way to understand the two peptides is to look at what they actually do at the cellular level
The NICE recommendations tell GPs to consider testing in anyone with one symptom or one risk factor, and to treat early to prevent neurological damage that can become permanent
Application Methods Topical serums (most common): Applied directly to the scalp 1-2 times daily Subcutaneous injections: Typically administered at the scalp or abdomen for systemic effects Microneedling with GHK-Cu: Combines mechanical stimulation with peptide delivery for enhanced absorption Best For GHK-Cu is ideal for anyone experiencing general hair thinning, early-stage androgenetic alopecia, or age-related hair loss
Some people develop deficiencies due to dietary patterns, others due to absorption challenges in the gut, and some simply because chronic stress and inflammation increase nutrient demand
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