Is it normal to have oily hair quickly?
Mostly.Normal for most people
Yes—hair that gets oily quickly is normal for many people. How soon it looks greasy can depend on your scalp, hair texture, hormones, and routine.
Your scalp naturally makes oil to protect your skin and hair, and some people simply produce more of it. Fine or straight hair can also look greasy sooner because oil travels down the strands more easily. Washing frequency, products, and hormonal changes can play a part, too.
There’s no magic number of days you’re supposed to go between washes. Wash when your hair feels oily or uncomfortable; you don’t need to train it to stay greasy. If the oiliness changes suddenly or comes with persistent itching, redness, or flaking, it’s worth asking a healthcare professional about it.