11 Reasons Your Hair Is So Oily: If you have an oily scalp, you’re not alone. We know that excess oil buildup can make your hair greasy, brittle, and grimy, which provides an excellent habitat for fungus to expand. In addition, it produces dandruff, a foul scalp, and makes your skin oily and acne-prone. To prevent this, you can tie your hair in a ponytail.
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