Scalp Odor and Buildup: Why Your Scalp Smells and Feels Dirty Have you ever washed your hair, but your scalp still smells… off? Or maybe your scalp feels greasy, sticky, or coated no matter what you do. 😬 You are not alone. Scalp odor and buildup  are very common problems, especially here in San Jose, California , where busy lives, workouts, and warm weather can take a toll on scalp health. Let’s talk about why this happens—and what you can do about it. What Is Scalp Buildup