Natural nail is made of keratin, a protein. Nail plate requires a certain degree of flexibility and moisture to promote healthy growth. Use the "hardening" treatment and chemicals on natural nails nail fragile and more vulnerable to rupture. Women like to have beautiful nails and men love to see women with well-kept hands. But there are some brands of nail polish and nail products that are prettier and last longer than other products. Of course, they cost a little more, but the effects are really worth it not to mention the much longer duration.