Get a Grip
The tweezer body extends from the tip to the opposite end, where the two arms are fused. In essence, each arm is a third-class lever using the fixed end as a fulcrum. As you squeeze the tweezer arms together, the force is transmitted to the tip. Your ability to maintain a good grip on a pair of tweezers, therefore, affects its function. Traditional tweezers offer a fairly small handle, perhaps a quarter-inch (0.6 centimeters) across. If you find it difficult to get a firm grip with such a design, consider using wide-grip tweezers, which feature large oval handles. The centers of the ovals are generally cut out for enhanced fingertip control.
You should also pay attention to the finish of your tweezers. Most are made of surgical stainless steel, which can become slippery against your skin. Tweezer manufacturers tackle this problem in different ways. Some use a matte finish or an epoxy coating. Others place nonslip rubber pads on the handles. And still others add serrations or drill holes to make the steel easier to grip.
Another option is a pair of tweezers with a scissor-style handle. They look a bit like lash curlers from one end, but they come equipped with square or slanted tweezer tips on the other. Much easier to manipulate than traditional tweezers, they are ideal for people with weak hands or painful joints.