Skin whitening effects may take several weeks to a few months depending on dosage, lifestyle, and individual body response
It has different properties, but one of them being on the immune system
In vitro studies, in cultured prepuberal rat pituitary gland, showed that melatonin inhibits gonadotrophin-releasing hormone and therefore luteinizing hormone release, providing evidence for a potential causal role of melatonin in the timing of developmental stages (52) (Figure 2)
If sellers fail to show proper certificates or do not follow Amazons rules, Amazon can remove their listings
So, over all competitive again on the safety and tolerability sides as well as efficacy
In a medical context, its essential to use professionally sterilized water to minimize the risk of infection