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
Natures Gate hemp for co-washing, detangling, and leave in + CO.
Curls