However, here's why human hair gets oily:
* Sebaceous glands: These glands in your scalp produce sebum, a natural oil that helps to moisturize and protect your hair.
* Overproduction of sebum: Some people's glands produce more sebum than others, which can lead to oily hair. This can be influenced by hormones, genetics, stress, and diet.
* Product buildup: Using too many hair products can clog your pores and cause your scalp to produce more oil.
* Washing too frequently: While it's important to wash your hair regularly, washing too often can strip away natural oils and trigger your scalp to produce more.
* Certain medical conditions: Some medical conditions, such as seborrheic dermatitis, can cause oily hair.
If you're concerned about oily hair, it's best to consult a dermatologist or trichologist for personalized advice.