Indiana PSI Nail Technician Practice Test

A buffer is primarily used in nail technology to polish the nail surface, which is why this answer is accurate. Buffing helps to smooth out any ridges or imperfections on the nail plate, resulting in a shiny and well-groomed appearance. The action of buffing utilizes fine abrasives that can remove minor surface irregularities, enhancing the overall look and feel of natural nails as well as providing a polished finish. The other options pertain to different aspects of nail care. Removing cuticles is typically achieved using specific tools like cuticle pushers or nippers rather than a buffer. Strengthening nail growth is more about applying treatments or using specific products that promote nail health. Changing the nail color usually involves nail polishes or gels, rather than a buffer, which is not designed for altering color but rather for surface finishing.