Naptural85 on youtube has a great, simple protein DT!
DIY Homemade Greek Yogurt Deep Conditioner | Natural Shine Enhancing, Moisturizing, Detangling Cream - YouTube
It's just 2-3 tbs of greek yogurt (organic), a few drops of an essential oil to mask the smell, and 2 tbs of ACV for shine.
If you want a SUPER protein-rich DT, try this:
2-3 tbs of yogurt (preferably organic, but it doesn't have to be greek)
3 tbs of peanut butter
1/2 an avocado, peeled and pitted OR 1 whole banana
2 tsp of honey
1-2 tsp of an oil of your choice
Combine this all in a blender. If you think it's too thick, add some ACV. The yogurt, peanut butter, eggs and avocado are all loaded with protein. The honey and oil will add moisture and shine.
Let us know if either one works!
P.S. If you get together enough money and decide to buy a product (^.^), try any Nature's Gate conditioner (for you, i would recommend the hemp or biotin; if you want a bit more moisture, try the aloe). You can find them at Whole Foods and Publix for less than $8 for 18 oz.