Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
Semi-drying oils, such as safflower and poppy oil, undergo greater dimensional changes than linseed oil. While a safflower oil based colour is perfectly appropriate for use in normal applications and mixing, it is not suitable for use with underpainting. The movement of the film can lead to cracking the layers applied above.
