How can tell when a Hydro 3 razor blade needs changing?

You can tell when a Hydro 3 razor blade needs changing by observing signs of dullness, such as tugging or pulling on your hair during shaving. Additionally, if you notice more irritation or discomfort on your skin, it may indicate that the blade is no longer effective. A buildup of hair and shaving cream residue can also signal that it's time for a replacement. Regularly checking the blade after several uses can help you maintain a smooth and comfortable shaving experience.