Many eyelash extension certification courses in the UK cover just one day of professional training. However, to become a certified eyelash technician, it takes much longer than 24 hours! Applying lash extensions can be tricky, and can take months before you are ready to start charging clients for your service. Perseverance is required if you don’t get the hang of it straightaway – it may even take more than one training course. Once you are qualified, you might still want to take additional intermediate training courses to refine and learn new techniques.