There are a few things that can contribute to the dulling of razor blades. One is the type of skin that you have. If you have tough or thick skin, it will put more wear and tear on the blades of your razor. Another factor is the frequency with which you shave. The more often you shave, the more likely it is that the blades of your razor will become dull.
There are a few things that you can do to help extend the life of your razor blades. One is to use a shaving cream or gel. This will help to lubricate the skin and make it easier for the razor to cut the hair. Another tip is to shave in the direction of the hair growth. This will help to reduce the amount of resistance that the blades of your razor encounter, and it will also help to prevent the blades from becoming dull.
Finally, it is important to rinse your razor blades after each use. This will help to remove any hair or shaving cream that may be stuck to the blades. It will also help to prevent the blades from rusting.