The true nature and definition of pastel is βto be dry.β It is not a wet medium like most forms of painting. That's what makes it so special.
Here's how Marie Lydie Joffre describes it:
Pastel painting can get expensive very quickly though. It's good to start with a basic pastel set, but you'll soon find you want to buy more and more colours. To help with that, we're having an online contest to win a free pastel set!