Something that you tend to find with extensions, braids, synthetic dreads etc is that while you're wearing them, your natural hair shedding doesn't work in the same way. Because the hairs that would normally fall are caught and unable to move, when you remove the extensions, or untie the braids, it looks alarmingly like loads of hair has been lost. It usually hasn't - it's just the same amount that would have fallen over the course of weeks, but it's had nowhere to go. Doesn't half give you a fright though.