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Choose SRCP for: Active wound healing where penetration matters Scar remodeling and reduction Routines that include other active ingredients Oily or resilient skin types Maximum potency requirements Choose GHK-CU for: General anti-aging maintenance Sensitive or dry skin Simple routines without other actives Injectable protocols (GHK-CU has more research) Those who prefer naturally occurring compounds (GHK)-CU: The Stabilized Ratio Variant A less discussed but important variant is (GHK)-Cu, which uses a 2:1 ratio of GHK tripeptide to copper instead of the standard 1:1

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The combination of vitamins B6, B12 and folic acid is more effective than vitamin B12 alone, just as in Medivitan (J Nutr 1994 124 (10): 1927)