A firming effect is visible immediately after treatment, partly due to swelling. On average, the skin needs 6 weeks to produce sufficient collagen after which optimal results will be visible. The skin's own collagen is stimulated with this treatment method, which ensures natural results. This is also why the results of a thread lift treatment are long-lasting. The effect of the treatment lasts for about 18 months. After that, you can safely repeat the treatment again.