Heavy locs can cause your roots to pull at your scalp, causing gradual hair loss as well as headaches and neck pain. Your locs might be heavy because they're too long or due to product build-up. If you don't reduce some of this weight, you may end up with a receding hairline.
Are dreadlocks unsanitary?
Dreadlocked hair is not inherently dirty if its well cared for. In fact, clean hair knots better and faster than dirty hair does. For this reason, many people with dreads go the extra mile to keep their locs clean.