MC1R / Pigmentation and Photoprotective Signaling PT-141 retains MC1R binding activity, and studies have characterized its capacity to activate the cAMPPKAMITF axis in melanocytes, driving tyrosinase upregulation and eumelanin synthesis, consistent with the signaling profile shared across the MT-2-derived melanocortin agonist class (Hadley & Dorr, Peptides, 2006)
It may affect your movement and sensation, especially in your legs, cause numbness or pins and needles and decrease your sensitivity to touch, vibration or pain
Common sites include the deltoid, vastus lateralis, and gluteal muscles
Type II is the one that matters for hair: it concentrates in the dermal papilla of scalp follicles and accounts for most of the DHT produced near the hair root
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