Dryness leads to breakage at the quick, peeling, and low breaks along the side of the nails. Clues to dryness can be seen when the nails are buffed. Light buffing that results in a lot of powder on the buffer is a clear indication of dry nails. If the cuticle area is dry, cracked, chapped, or swollen you can bet that the nails are dry. The solvents in most nail polish removers, as well as household cleaners, dishwater, etc. strip the nails of the moisture they need to stay flexible and strong.
Healthy nails are flexible on the sides and stable at the center.
It is important that nails be cared for so that they can retain and then not lose their moisture and become dry again. This is especially challenging in drier climates or in the cold weather. The key to nails that are not dry is twofold. First is treatment to the nail itself and secondly is treatment to the hands and cuticles. For those who do not like to wear color on their nails, it is still imperative to protect the nails with a nail strengthener or at least a coat of clear protectant every now and then.