Nekothione 9 in 1 by Kath Melendez is a supplement that's marketed for whitening, anti-aging, and moisture-boosting effects. 
It contains ingredients like Glutathione, Collagen, L-Cystine, Curcumin, Centella Asiatica, Carotenoids, Beta Glucan, Vitamin B3, and Hyaluronic Acid. 
The supplement is made in Japan and is typically taken 1-2 times a day, with some users recommending taking it before meals for better absorption