I have used the press agent before and it made my hair silky and straight. I haven't used the curl defined as of yet.
Mizani Press Agent Thermal Smoothing Raincoat Styling Cream 5 oz | Heat Protectant Cream
Create smoother, sleeker blowouts and silk presses with Mizani Press Agent Thermal Smoothing Raincoat Styling Cream 5 oz. This moisturizing blow-dry cream provides heat protection up to 450°F while helping smooth frizz, lock in moisture, and improve manageability during thermal styling.
Designed for wavy, curly, coily, and textured hair, the cream can be layered without curdling or flaking. It works especially well for thicker, drier textures that need additional moisture and smoothing before blow-drying or flat ironing.
The formula features Argan Oil and Agave Extract to help care for dry, frizzy, unmanageable hair and protect against damage and split ends. It also contains a UV filter for added protection from UV exposure. For customized styling, Mizani recommends pairing the cream with Press Agent Raincoat Styling Serum.
After cleansing and conditioning, mix two parts Press Agent Raincoat Styling Cream with one part Press Agent Raincoat Styling Serum in your hands and emulsify. Apply to damp or wet hair, beginning at the ends and working toward the roots. Reapply as needed depending on hair density, texture, and desired straightening results.