Organic Vegetable Glycerin to prevent cracking
Glycerin (also called glycerol) is a plasticiser and humectant that can be added to glues, starches, pigments and paints to make them more flexible and prevent cracking. Is also used as an alternative to Gum Arabic. Makes watercolours wetter and last longer on the palette.
Vegetable glycerin is a clear liquid typically made from soybean, coconut or palm oils.