Barrettine Wood Reviver is a water based oxalic acid formula which returns old, tired, grey looking cladding, fencing and decking to its freshly cut colour in minutes. Oxalic acid is a naturally occurring acid found in spinach and rhubarb. It can also remove black stains on Oak left by rust and water.

This is a ready to use, low VOC and chlorine free bleaching product, safe to use at home indoors and out.