(Some women apply retinols on alternating nights or twice weekly to avoid the skin irritation that can come with daily useor skip it altogether and just use GHK-Cu peptides topically.) If you have sensitive skin thats irritated by either retinol or vitamin C, then using a GHK-Cu peptide can be an effective and non-irritating option to promote collagen synthesis in the skin
This, in turn, should help boost absorption of nutrients
PLoS Med 17, e1003084 (2020)
Luminescence 33:243248 Kong L, Chu X, Ling X, Ma G, Yao Y, Meng Y, Liu W (2016) Biocompatible glutathione-capped gold nanoclusters for dual fluorescent sensing and imaging of copper(II) and temperature in human cells and bacterial cells
The comorbid conditions of Fragile X syndrome, tuberous sclerosis, phenylketonuria, or fetal alcohol syndrome were excluded because these children present some autistic behavioral features, but the origin is known