Moisturizing before and after you shave will help prevent nicks and cuts from occurring in the first place. Taking a warm shower before you shave or washing the area you are shaving with hot water for a few minutes prior to shaving will help keep the razor from dragging on your skin. This reduces the risk of nicks and cuts.  This technique is called wet shaving. When you wet shave, use a gentle soap that won’t strip away your skin’s oils or dry out the skin, which makes shaving even more difficult. Replacing your razor blade regularly will prevent the nicks and cuts that come from shaving with a dull razor. Changing your blade often will also prevent razor bumps and redness, and reduce the growth of bacteria that might lead to infections.   Change your blades as soon they seem dull. When the razor drags on your skin or when it feels uncomfortable to shave, this is a good indicator you need to change the blade. Changing your razor after 5 to 10 shaves is one recommended timeline, but it depends on how often you use your razor.  Gillette recently revealed that their razor cartridges are designed to last for five weeks. Although it might be tempting to try and save money and time, shaving dry or without gel or cream increases the likelihood of nicks and cuts. Use shaving gel or shaving cream so the razor will glide smoothly over your skin. Hair conditioner also works well as a shave gel or cream, and can be less expensive depending on the brand. Disposable razors with a single blade, while often more affordable, tend to drag on the skin, leading to nasty nicks and cuts. For a smoother shave, opt for a razor with more blades. Most of us don’t bother to clean or dry our razor blade after using, but research suggests this increases longevity, and prevents the blade from getting dull, which usually results in bad cuts and nicks. Try these tricks to keep your razor clean and dry:  Rinse your razor after use in clean, hot water. On a dry towel or a pair of jeans, wipe the razor in the opposite direction from shaving....

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Write a summary of the previous text in Vietnamese:
Dưỡng ẩm da trước và sau khi cạo. Tắm vòi sen nước ấm trước khi cạo. Thay lưỡi dao cạo thường xuyên. Tránh cạo khô. Tránh loại dao cạo dùng một lần với lưỡi đơn. Giữ cho dao cạo sạch và khô. Cầm dao cạo đúng cách. Cân nhắc dùng các loại dao cạo khác nhau.