hydroquinone [ 1,4-dihydroxybenzene,Artra,Black and White,Canderm brand of hydroquinone,Cantabria brand of hydroquinone,Dermofarm brand of hydroquinone,Eldopaque,Eldopaque Forte,Eldoquin,Eldoquin Forte,Esoterica,Hidroquilaude,Hidroquin,Hidroquinona Isdin,ICN brand 1 of hydroquinone,ICN brand 2 of hydroquinone,ICN brand 3 of hydroquinone,ICN brand 4 of hydroquinone,Isdin brand of hydroquinone,Licostrata,Lustra,Medicis brand of hydroquinone,Melanasa,Melanex,Melpaque,Melquin,Mex-America brand of hydroquinone,Neostrata HQ,Neutrogena brand of hydroquinone,Phiaquin,Plough brand 1 of hydroquinone,Plough brand 2 of hydroquinone,Robins brand of hydroquinone,Solaquin,Stratus brand 1 of hydroquinone,Stratus brand 2 of hydroquinone,Ultraquin,Vinas brand of hydroquinone,beta-quinol,hydroquinone, copper (1+) salt,hydroquinone, lead (2+) salt (2:1),hydroquinone, monocopper (2+) salt,p-benzenediol ]