I don't oil or grease my scalp either
I think oil and grease only add to the problem of dry, flaky scalp. Dry things need to be hydrated, so I rely on the washing and conditioning aspects of my regimen to hydrate my scalp. I look at the scalp as an extension of the face. Just as pores can become clogged on the face, the follicles of the hair can experience the same type of obstruction if products are placed directly on it-- especially heavy oils and greases.
The scalp produces its own perfect oil, sebum, and does not need help from us via topical products. The problem of dry, flaky scalp is only aggravated by the addition of products onto the scalp skin. It ends up creating a vicious cycle of dryness. The scalp will produce less sebum to compensate for the products you are putting on it. And without this constant, even production of sebum-- the function of the scalp is thrown off balance. Dandruff and dryness return from the lack of sebum production-- and then you put more stuff on the scalp thinking this will help. Then again, the scalp cuts back on sebum and dryness returns. The scalp, like any other skin needs to be able to respirate (perspire) etc. With heavy concoctions on the scalp clogging the pores, an unhealthy environment for growth is created and the function of the scalp is hindered form operating at its optimal levels. I've found that the best way to hydrate the scalp is simply through frequent washing and conditioning. This keeps the scalp skin clear of any obstructing clutter and keeps it moisturized and supple.
I saw this picture online and saved it back in the day, and it reminds me why it seems best to keep things off of the scalp.
The stuff seen clogging the pore here is actually excess
sebum! So imagine if the scalps "perfect" oil can clog it up when its left on the scalp in excess, what a coating of a thicker oil product will do?
erplexed There are people who grease their scalps daily with hair to the floor, so the hair and scalp will still thrive-- but I think conditions are optimal when the scalp is left to function on its own.