Brusho Paint Crystal Colours is a one-of-a-kind water-based paint medium. It's super-highly-pigmented, unpredictable and it's bags of fun to paint with! If you paint with watercolours or if you're new to art and you want a very forgiving method of painting loose, expressive artwork, then Brusho® could be right up your street.There are 34 beautiful and are all acid-free and non-toxic. Using any watercolour paper or absorbent substrate, simply sprinkle cold water onto Brusho crystals or dilute and use as a regular watercolour.