© Joanna Pass
This week I've chosen to paint an illustration only using the ultramarine Dr. Ph. Martin's hydrus watercolour. I've been thinking about trying the hydrus watercolours for a while and I'm pleased I have. They seem to handle like a drawing ink. I love Winsor and Newton drawing inks but they're not lightfast which is why the hydrus appealed to me. Verdict so far - Great colour, flow and a little goes a long way!