Both are prescribed by endocrinologists
A 2025 systematic review by Sarkar, Yadav, and colleagues in the International Journal of Dermatology characterized glutathione as moderately effective for topical and oral use while explicitly noting that intravenous glutathione is contraindicated due to lack of efficacy and adverse side effects
Mirzaeei S, Faryadras FB, Mehrandish S, Rezaei L, Daneshgar F, Karami A
Specifically, KLOW adds one compound to the GLOW triple-blend: KPV, a tripeptide derived from the C-terminal of alpha-melanocyte-stimulating hormone that introduces melanocortin receptor-mediated anti-inflammatory signaling into the stack
This does not establish a human appetite or weight-loss effect
Typically, skin whitening injections are administered by a medical professional once or twice a week, depending on your skin goals