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Your hair needs to be long so that it knots and loops naturally. Attempting to do this method with short hair will not create dreadlocks. During the time when your locs are forming, washing them or getting them wet may cause them to unravel. This is especially true of straight hair. Try using a dry shampoo to clean your hair until your locs have had a chance to get established. Conditioner detangles and softens your hair, which is the opposite of what you want to happen when trying to achieve locs using the natural method. You can wash your hair with water and shampoo or soap once the locs have had a few months to set, but do not use any conditioner. Mix a couple of tablespoons of salt into a spray bottle with water and spray it onto your locs twice a day. This will increase the friction among the hair strands and create more loops and knots. You shouldn't need to use creams, waxes, or hair products when forming natural dreads. In a month or 2, your hair should start to loop and knot together. Over time, your hair will start to form locs if you don't condition or brush it. The natural method is the longest method to achieve dreadlocks and should only be attempted if you have patience. Since you have little control over how your locs form with this method, it's important to separate your hair when it becomes severely matted or your locs become too big. If you notice that your locs are fusing together into a giant loc, separate them into smaller pieces by pulling them apart.
Grow your hair out to at least 10 inches (25cm) long. Avoid washing your hair for a few months. Don't condition your hair. Spray salt water on your locs to speed up the process. Wait 1-3 years for natural dreadlocks to form. Separate the dreadlocks into smaller locs when they get too big.