To help someone who wants to get rid of their dreadlocks but save as much hair length as possible! They currently have dreadlocks that reach their knees and haven't been cut for nearly 20 years, they realise it's going to mean a serious cut but are hoping to end up with maybe shoulder length hair. The plan is to cut them all significantly shorter then comb them out.
They're white btw (only mentioning as it is probably relevant to what products might be most suitable!). And for personal reasons they really don't want cropped hair, which is why they haven't done this already as they're so worried about ending up with very short hair.