For mature locs, I suggest a maintenance schedule of every 6-8 weeks. Retwisting too often can cause thinning. Your locs will flourish best with low manipulation. In between seeing your location for maintenance, moisture is your best friend. Misting your locs from roots to tips with a light moisturizer, and locing in the moisture with a natural oil, will minimize the chance of your locs becoming dry causing breakage. This simple 2-3x weekly regimen is important year round.