It is so versatile that to promote skin and overall health, it could be a good deal to take it as a supplement, to put on as a skin overlay or to drive forward to a medical supervision nowadays in the form of injections
Exp Gerontol
Glutathione is a small peptide molecule composed of three amino acids: cysteine, glutamic acid, and glycine
Jablonska E, Gromadzinska J, Peplonska B, Fendler W, Reszka E, Krol MB, Wieczorek E, Bukowska A, Gresner P, Galicki M, et al
The FDA states clearly that compounded medicines are not reviewed for safety or effectiveness before sale
Some use well known branded products, others are unknown but most of the type like for hydroquinone it is impossible to classify them and only market will tell