Turpentine is the traditional solvent for oil paint — used to thin paint in lean underlayers, extend mediums, and clean brushes. Michael Harding's Portuguese Maritime Turpentine is steam-distilled from the resin of the maritime pine, producing a purer solvent than most commercial turpentine substitutes, with a less harsh odour and minimal residue after evaporation. It dissolves dammar resin fully (essential for traditional dammar-and-stand-oil medium recipes), and the maritime-pine source gives a noticeably softer pine smell than the more aggressive industrial-grade turpentines. For painters who want true turpentine but find standard distillates harsh, this is the upgrade. Use in lean-to-fat working: thin underlayers with turpentine only; add oil in subsequent layers. Do not use turpentine in upper layers of a painting — paint that dries with more solvent than oil will be brittle and prone to cracking over time. Use in a well-ventilated space. Type: Steam-distilled Portuguese maritime pine turpentine Brand: Michael Harding Odour: Pine, softer than industrial-grade turpentine Dissolves dammar: Yes — fully Effect: Thins paint; use in lean underpainting layers Not recommended for: Upper paint layers Ventilation: Required Sizes available: 100ml, 250ml, 1 litre