I just use a little hair milk, some breakage defense by Cantu, and ApHogee leave in. The most important thing for me to get it straight is my method. After I wash and condition I put the wet hair into like 4 or 5 twists then sit under the dryer for about 30-45 minutes until hair is dry to nearly dry. This helps to get the roots straight and saves my arms. Then I just blow it out. If i need the roots super straight I'll put a neck wrap along my edges, or do a wrap and then apply the neck wrap, but then I have to sit under the ddryer for longer.