Some permanent markers are waterproof, mainly depending on the ink and the material of the pen case.
In general, markers formulated with special oil-based inks have better water resistance. Even when used in wet or rainy environments, the written text will not be easily diluted or blurred by water. Therefore, for people who need to use markers outdoors or in humid environments, it is very important to choose markers that are waterproof.
In addition, the material of the pen case may also affect the waterproof performance of the marker. The shell of some markers is made of a polymer material, which has certain waterproof properties and can further protect the ink from moisture.
However, not all permanent markers are waterproof. Some markers with water-based inks may appear faded or blurry under the action of water. Therefore, when buying a marker, consumers should choose a marker with waterproof function according to their needs, and carefully check the product description or ask the shop assistant to confirm its waterproof performance.
