You should wait 3–6 weeks after getting dreads before washing them for the first time. This waiting period allows the locks to set and tighten properly, especially if they were created using methods like twisting, braiding, or backcombing that rely on friction to hold their shape.
During this initial phase, the roots are still loose and unstable. Washing too early can cause them to unravel, come undone, or become excessively frizzy. Some stylists recommend waiting even longer—up to 8 weeks—for maximum stability, particularly with looser or finer hair textures.
Once you do wash them, use cool or lukewarm water with a residue-free or dreadlock-specific shampoo. Avoid regular conditioner, which can build up and weaken the locks. A diluted apple cider vinegar rinse or specialized dread shampoo helps remove buildup without loosening the structure.
After the initial waiting period, you can wash your dreads every 1–2 weeks, though the exact frequency depends on your hair type, lifestyle, and personal preference. Some people wash weekly; others stretch it to every few weeks. Between washes, spot-clean your roots with a spray bottle and dry shampoo if needed.
Keep in mind that dreads will continue to tighten and mature over several months to a year, so even after the first wash, handle them gently during the first few months. Avoid pulling or twisting them roughly, and consider wearing a durag or bonnet while sleeping to minimize friction and frizz.