I think before trying to combat shrinkage, you should try to work with your properties (use the link by Kathymack). I sometimes use the diffuser, but you still shouldn't use it extremely often. I agree with Kathymack, you should learn to love your curls- shrinkage or not.
High Porosity, Fine, Thin Density, Low Elasticity
Suave for co-wash and rinse out. SM restorative as leave in. Ogx mousse, la looks, la bella, and cantu natural for stylers. Clarify and low poo once a month.