There are many types of toothbrushes available online and picking the right one may be a challenge for you unless all you are interested in is its price and brand. If you already own a toothbrush and you require a replacement head for the same then you will have to look online for websites that not only sell toothbrushes but also their heads. Moreover toothbrushes are not all the same and hence, you will have to be specific when looking for a toothbrush head. The best way would be to look for the right brand that would match with your toothbrush brand.
There are several online stores that specialize in toothbrushes and accessories and hence, if you can manage to find such stores, it would be easier for you to find the right toothbrush head that would fit well with your existing toothbrush. Depending upon your personal preferences, it may sometimes just be a good idea to purchase the whole set again. This is just to save you from the hassle of looking for the right toothbrush head which may not be easy.
If however, it is a unique toothbrush that is difficult to live without and if you have fallen in love with it and you would not like to replace the whole set but instead you would prefer getting a new toothbrush head such as tandbørstehoveder then it may be a good idea to look for a specialist website that could meet your requirements. You can not simply go to a local supermarket and expect them to have stocks of toothbrush heads as supermarkets and other larger stores would only stock items that would be in popular demand.