Grumbacher formulates this thinner from refined petroleum distillates that eliminate the sharp solvent smell without sacrificing performance. The mild formulation thins oil paint effectively while maintaining proper flow characteristics, colors spread smoothly without breaking down or becoming overly transparent. Artists working in smaller studios or shared spaces particularly appreciate how this thinner keeps the air breathable during extended painting sessions.

The same properties that make it gentle on your workspace make it effective for brush cleaning. Paint releases readily from bristles without requiring aggressive scrubbing that damages ferrules and splays tips. Natural and synthetic brushes both respond well to this solvent, whether you're doing quick mid-session cleanups or thorough end-of-day maintenance.

Add directly to color on your palette for immediate thinning, or use it to create fluid glazes and washes. The refined formulation evaporates cleanly without leaving residue that could affect subsequent layers. Keep a jar at your easel for constant access and another at your cleanup station, this thinner handles both painting and maintenance duties equally well.