is l carnitine better as a pill or powder L-Carnitine Fumarate L-Carnitine vs Fat Burner Powders:

Proteomics 72 (4) (2009) 677689

Hot cht Curcumin trong ngh c cho l c th ti to Glutathione

A scientific review of four small-scale studies confirmed that glutathione use does result in some skin lightening.24 Additionally, glutathione has also been shown to decrease psoriasis when levels are bolstered by intake of whey protein, which contains glutamylcysteine, a precursor to GSH.25 Most impressively, perhaps the same studies mentioned above also show that glutathione doesn't just lighten, but it improves skin elasticity and decreases wrinkles' appearance

Science is evolving and individual responses differ

Han F, Li S, Yang Y, Bai Z