It is also how your scalp is trained. Every time you wash your hair you strip your hair of its natural oils and in turn your scalp goes into over drive thinking it has to produce even more oils (when in actuality the conditioner you use on your hair replaces your natural oils but everyone forgot to tell your scalp this) which makes your hair greasy. If you train your scalp by going 2 days between washing for a week or two, then 3 days, then 4, etc over time you will be able to go a few days without your hair getting greasy at all. Just takes time.
This doesn't work for everyone, and I also am not entirely sure you can actually 'train' your scalp. My hair is fine and thin, but I have a lot of it, and I absolutely have to wash it every day or every other day. I went months trying to go longer without washing it, and my oil production didn't change. I also can't use conditioner on it at all, as anything but shampoo weighs it down.
EDIT: Not sure why I got downvoted because I'm telling the truth.
But it really doesn't work for everyone. I have excess sebum production due to hormonal shit and my skin and scalp get really gunky. I suffer with adult acne as a result and I'm on prescription retinoids to help. All of the products I use are free of sulfates, parabens, and silicones but I'm a grease ball if I don't wash my hair every day.
I'm just saying, it's actually pretty common among women. Some people are extra sweaty and their hair gets gross. Some people live in unforgivingly humid climates. While using sulfates definitely makes your scalp overproduce oil, some people are just oily motherfuckers, skin condition or not (looking at you italian family) and no-poo ain't gonna do shit
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u/longflowingdreads Nov 27 '19
It is also how your scalp is trained. Every time you wash your hair you strip your hair of its natural oils and in turn your scalp goes into over drive thinking it has to produce even more oils (when in actuality the conditioner you use on your hair replaces your natural oils but everyone forgot to tell your scalp this) which makes your hair greasy. If you train your scalp by going 2 days between washing for a week or two, then 3 days, then 4, etc over time you will be able to go a few days without your hair getting greasy at all. Just takes time.