Colors are made in small batches no larger than five gallons at a time to ensure the highest level of control. Pigments are carefully ground to enhance the beauty and luminosity specific to each, and then combined with pure, premium, alkali-refined and pH-balanced linseed oil. Every ingredient is hand-measured, and every batch is scrutinized for quality. Comes in 37ml tube.
Most Williamsburg Oils are considered to have excellent lightfastness (LFI), with the exception of Alizarin Crimson and Van Dyke Brown, which have very poor lightfastness (LFIII).