Lascaux Mediums & Additives

Lascaux Retarder Ultra

Added to acrylics Lascaux Retarder Ultra extends open time sixfold without altering the quality or the aspect of colours.* Not suited for works on absorbent substrates or outdoor use.

  • extends open time sixfold
  • does not affect quality and aspect of the colour
  • only minimal changes to viscosity
  • lightfast and age-resistant
  • pastose and very economical

Use & application:
  • as an addition to acrylic colours on non-absorbent substrates 
  • only for indoor use
*Warning: H319, EUH208.