Pebeo Studio Acrylics Mediums, Studio Phosphorescent Gel 250-Milliliter, Turquoise Turquoise phosphorescent gloss medium for acrylic paints in 250ml tube Can be applied on canvas, cardboard, wood, metal (suitable for most surfaces) Slightly turquoise tinted gel that absorbs the natural or artificial light and re-emits it in the darkness For best results, apply in thick coats Clean brushes and painting knives with soapy water