MasterFinish 380 has been re-formulated with a high-visibility yellow pigment dye, making it easy to see when sprayed onto any colour of freshly placed of concrete – including mixes containing black oxide pigment. MasterFinish 380 set retarder is economical and extremely easy to use. Once the free water has evaporated from the surface of the freshly placed concrete, spray-apply MasterFinish 380 at the rate of 250mls per square metre. The non-staining yellow dye clearly shows which areas have been sprayed, helping to ensure you achieve full and even coverage, every time.