I have found a way of adding locs to my locs using a combination of yarn and fake hair. It's nearly undetectable. The only drawback is, it takes a bit of time to do. Eventually it will have to be taken out and re-done. I'm sure I can offer this to ppl, but you can't really DIY (I managed with lot's of help). It really has to be done by another person bc they can see the gaps at the top or back of your head and you can't.