We recommend the same thing here as we do for tightening frames and repairing scratches. Consult a professional. Adjusting the arms on your glasses using the advice of an online guide is likely to damage them. Many online guides suggest submerging your glasses in hot water - do not do this. At worst it will damage your glasses, at best it will void your warranty. If you need the arms on your glasses adjusted, get in touch with an optician or our support team. Professionals use specialised tools to adjust the arms on glasses. For plastic or acetate frames, this will involve a frame heater. Metal frames need pliers and precise measurements. Don't attempt to adjust your glasses' arms with DIY solutions and inadequate expertise. You are likely to end up with a more crooked fit than you began with. A professional optician will be able to adjust your uncomfortable glasses with ease. They have years of experience and a clear understanding of how each piece of your frames work. They will be able to adjust the arms, lenses, nose pads, and temple joints. Opticians will not use quick and unreliable fixes. They will ensure that your glasses are comfortable and effective for a long time.