haven't seen the video you mention but to get 'crinkled' hair you need to use a hair crimper. I bought one for my daughter either last Christmas or the year before and it has different size plates so that you can get thin or thick 'crinkles'. You can get the same effect by plaiting damp hair and sleeping with them in overnight. When you take them out in the morning they should be crimped, try it out when you are not going out anywhere special so you can wash them out if you don't like the effect