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More time in growth phase can mean thicker hair over time

As for duration, researchers have found no observable adverse effects in test subjects being administered IGF-1 for periods between two to twelve weeks [8, 19]

Some research indicates that elevated doses of B vitamins improve sensory-motor control

Best delivery method: GHK-Cu via subcutaneous injection or topical

Ensure it's designed for medical or cosmetic use and can be properly sterilized

They operate on non-overlapping pathways and are frequently stacked in longevity protocols