Change shampoos

While most women know when a shampoo doesn t agree with their hair, many don t realize it may not agree with their nails even if their hair looks great. This, say experts, is particularly true of detergent shampoos, or those for oily hair, which are designed to strip lipids and other natural oils from the scalp. If your nails are very dry and you are using any soap product that strips the oils, there is the potential to dry the nails, says Stern.