For circRNAs, circIL4R facilitates tumorigenesis and prevents ferroptosis by regulating the miR-541-3p/GPX4 axis (Xu et al., 2020a)
The goal is not just to produce more collagen but to produce collagen that assembles properly into a strong, tight matrix
Multiple clinical trials in photoaged skin (sun damage) have shown that topical GHK-Cu formulations improve skin appearance including reductions in fine lines and wrinkles, improvement in skin firmness and elasticity, enhancement of skin texture and smoothness, increase in skin thickness (reversing age-related dermal atrophy), improvement in skin clarity and reduction in hyperpigmentation, and overall rejuvenated appearance
When choosing between the two, it's important to consider factors such as purity, absorption, and efficacy, as well as consult with a healthcare professional.