There are a lot of misconceptions about natural remedies for strengthening your nails, but the only sure way to do it is to introduce supplements into your diet. The only supplement that has been proven to strengthen nails is biotin, which takes an average of six months to show any effects. Most home remedies like applying garlic, or eating more protein, will not help your nails to grow faster or stronger. If you regularly wear nail polish, you can stain and weaken your nails in the long-term, even if you thoroughly clean them between applications. It's a good idea to let the nails build back up some strength and healthy color about once a year or so, keeping polish off them for a month or two.  Instead of applying polish, use the chance to really pamper your nails, applying coats of homemade cleansers and whiteners to get your nails looking good again. It's also important to always clear-coat your nails before adding colored polish to keep them from staining as easily as they might otherwise.

===
Write a summary of the previous text in Vietnamese:
Bổ sung dưỡng chất để tăng cường độ chắc khỏe của móng. Ngưng sử dụng sơn móng tay trong một khoảng thời gian.