I've experienced MBD before with their Pearl Powder, but after reading reviews and conducting some minor research, the active ingredient, Arbutin, is an effective skin whitener. Bought this pack of 10 on amazon for $14!
This sheet is thinner in comparison to MBD pearl powder, but no worries, just be extra careful with opening the package!
I cut the mask according to my face shape and left it on for 45 minutes while occasionally patting my skin.
Skin looks brighter, yes! But I'm sure you'd have to continue use for these results to be more permanent.
I love arbutin! We need more products with this ingredient. Will continue searching for some!