It is likely to be oily earwax, which is a secretion produced by the ceruminous glands in the skin of the cartilaginous portion of the ear canal. Earwax serves to protect the skin of the ear canal and trap foreign particles. Normally, after being secreted from the ceruminous glands, earwax dries into thin flakes. However, in some individuals, the earwax remains sticky and oily, a condition known as "wet ear," which is related to genetics.Through daily activities such as chewing and opening the mouth, earwax can naturally detach and be expelled. When there is an overproduction of earwax or its expulsion is hindered, it can accumulate and form a blockage in the ear canal, leading to what is called an earwax impaction. If the earwax is difficult to remove, it is advisable to visit an otolaryngology clinic, where a professional suction device can be used to extract the oily earwax, or an ear canal irrigation method can be employed to flush it out.