That does not establish what SubQ KPV does in human skin, and no published subcutaneous human study has measured a KLOW skincare outcome. Regulatory status KLOW as a pre-mixed blend has not been evaluated by the FDA
So, when does it matter
Metabolic strain is the trigger rather than age on its own
Cyanocobalamin (cyanocobalamin): Side effects, uses, dosage
Independent testing and MHRA enforcement activity (including Operation Pangea) have found that many such products contain incorrect concentrations, impurities, or in some cases entirely different substances to those labelled
The technique is learnable, but the decisions around it (do you actually need it, what dose, how often, and is something else being missed) are medical judgements, and getting them wrong carries real cost