**8.4 Brilliant blue G**

The brilliant blue stain has been used for selective ILM staining. It was approved in the European Union in 2007 as Brilliant Peel. Brilliant Blue G formulation uses 4% polyethylene glycol (PEG) as a carrier for the dye and prevents the blue stain from diluting in the vitreous cavity. Since the dye is heavier than water it settles at the posterior pole with a standard injection technique.
