GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper tripeptide your body already makes. It signals your skin to repair, regenerate, and produce collagen. It's been studied for over 50 years for its role in skin regeneration and anti-aging.

Most brands use GHK-Cu at 0.01% or less — just enough to list on the label. We formulated at 2%, a clinical-grade concentration designed to actually penetrate the skin barrier and signal real change.

Signal Serum: AM + PM
Renewal Cream: AM + PM
Sun Shield SPF 50+: AM
Apply serum first, then cream, then SPF in the morning.

Weeks 1-2: Skin feels softer, more hydrated.
Weeks 3-4: The glow starts — skin looks rested.
Weeks 6-8: Firmness improves, fine lines soften.

Our products are topical — applied directly to the skin. Injectable GHK-Cu is a separate protocol often used in peptide therapy. Both have benefits; our line is designed for daily at-home use.

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Email us at hello@loop-beauty.com. We read every message and typically respond within 24-48 hours.