The process of retwisting your locs is very benefitial to your hair. It is even more important when you have starter locs because it helps train your locs to grow where they need to, if thats the look you want. Retwisting is a method of combining any new growth you've accumulated over time with already established locs. This form of loc maintenance is usually done once every 1-2 months and typically by a loctitian.
If you're a do-it-yourselfer, like myself, you might be itching to try hands on it to either save a bit of cash, connect more with the locking process or just to have bragging rights about trying it once. Here is a tutorial on retwisting locs that I feel is easy to follow. As a bonus, Pretty Hippie, uses her own twisting gel for the retwist, that is all natural and doesn't leave any residue. See that video below.
Something to definitely try.