Exosome injections for skin rejuvenation around the delicate eye area etc. How effective in relation to the high cost and effectiveness in comparison to e.g. PRP or polynucleotides for same concerns. How safe are Exosomes? In terms of systemic serious health risks but also of adverse aesthetic impacts/disfigurements eg pigmentation changes, permanent swelling, disfiguring facial tumours or causing worse sag/laxity/ageing! The London Regeneration Clinic uses bovine umbilical cells – thoughts?