GSH can also be used as a source of sulfur and cysteine
10.1038/nchembio.2239 39 EmH.JrG.CB.CH.ChL
It plays a vital role in wound healing, angiogenesis, and cellular remodeling, and is studied extensively for its influence on collagen synthesis, anti-inflammatory signaling, and gene expression associated with skin and organ repair
investigated rapamycin pharmacokinetics following a single oral dose of 0.1 mg/kg or a five-day course of this treatment.[51] In the single-dose protocol, rapamycin concentration peaked twice, at two- and six-hours post-administration, but this pattern was not noted when the dogs were treated on five consecutive days
This is sometimes referred to as the fertile window
The combination approach proves particularly valuable because GHK-Cu must reach hair follicle stem cells deep in the dermis to achieve maximum effect