If you've been researching PDO threads in Derby, you may have come across terms such as PDO mono threads, cog threads and thread lifts. Although these treatments can all use PDO (polydioxanone), they aren't the same and shouldn't be expected to produce the same results. At Erika's Beauty in Derby, we offer PDO mono threads but have made a conscious professional decision not to offer PDO cog thread lifting. In this guide, we'll explain the difference between PDO mono threads a