Maintenance dosing drops to once weekly or less
No topical delivery works well for skin-layer gene expression (collagen, antioxidants, inflammatory signaling in dermal fibroblasts)
The first comes from the blood, where DNA methylation clocks such as Systems Age from TruDiagnostics, Proteomics-based aging clocks like those from Vero, and RNA signatures read the activity of brain specific aging-associated genes, which is the basis of the NeuroAge panel
The testing documentation guide explains how to interpret these results
Human trial Research Disclaimer: Doses reported below are from published preclinical research protocols
For instance, topical or intrauterine delivery of growth-promoting peptides has been trialed in other tissues