PT is protein treatment- fantastic for helping damaged hair (can also help perk up natural curls/waves, especially if your hair is fine in texture). DT is a deep conditioning treatment.

Your product choices are best decided by your hair properties (texture, porosity, etc). The right products will enhance your natural wave pattern. Have you considered trying the Curly Girl (CG) method?

Modified CG since 11/5/11
CLEANSE: VO5 Vanilla Mint Tea Clarifying, DevaCare No-Poo, CHS Treatment Shampoo
RO: DevaCare One Condition, SS Caitlin's Conditioner, Mop Top Daily Conditioner
LI: SS Repairing Protein Treatment, CHS Silk Leave-In
STYLE: Re:Coil, Curl Keeper, Deva Ultra Defining Gel, Curls Rock Amplifier and Strong Hold Mousse, Sweet Curls Elixirs Okra Gel and Hard Hold Gel, SS Curl Enhancing Jelly and Firm Hold Gel