Can you use the Just For Me Texturizer to "Define Curls"? Yes it can. Just follow instructions as outlined for the application. Then, to define curls for daily wear, apply the Just For Me 2 in 1 Conditioner on damp hair. For firmer curls, also foam in a small amount of the Motions Light Styling Foam. Scrunch hair to sculpt in the level of curl or wave pattern desired. Let it air dry or use a difusser attachment to your blow dryer to lock in curls. Don't touch curls after it dries.
If hair is very thick and dry, apply the Just For Me Oil Moisturizing Lotion to damp hair FIRST, then follow the styling techniques above.
Good Styling!