Legally speaking, there is no specific license you need to do eyelash extensions in the UK. HOWEVER, this doesn’t mean you don’t require any training or qualifications whatsoever to start your own lash extension business. First and foremostly, training and qualifications help ensure you don’t cause any harm to your clients. To apply lash extensions, you will be using chemicals and sharp tweezers on a very sensitive area. If you were to cause damage to anybody’s eyes, you would likely be facing serious legal trouble, as well as having a very upset person on your hands. Secondly, proof of qualifications will likely be needed by your public liability insurer. Again, while not legally necessary, it is highly advised that you do have public liability insurance as a beautician. It protects you in the case a compensation claim is made against you. For many public liability insurers, proof of qualifications or training is required in order to be able to cover you for the treatments you offer – including eyelash extensions.