RE:RE:Obagi videos (skin lightening)Product ingredients in old preparation of Skin Lightening cream by Obagi as follows-----------------------Blender® A unique formula containing prescription-strength
hydroquinone for the gradual lightening of sun spots, age spots, and other types of discoloration. - See more at:
https://obagi.com/patients/product-line/nu-derm/overview#sthash.wBtIksUc.dpuf
According to Neil on his videos on the web this ingredient is banned in Europe as a known carcinogen. Only provides waring on the label for US and Asia.