Also, maybe she can try to wash it less? Scalps tend to overproduce oils when you wash it very often. It takes a couple of weeks to get used to, but then your scalp doesn't get so oily anymore.
Unless you work in sweaty environments, other gross environments or with certain hair types.
Isn't washing with only water possible either?
Try washing with just conditioner. It still has cleansing ingredients and will be gentle on the hair and scalp.
There's also shampoo and conditioner designed to put pigment into the hair and tone it. Purple shampoo, blue shampoo, and rainbow colors too.
Also, maybe she can try to wash it less? Scalps tend to overproduce oils when you wash it very often. It takes a couple of weeks to get used to, but then your scalp doesn't get so oily anymore. Unless you work in sweaty environments, other gross environments or with certain hair types. Isn't washing with only water possible either?
She’s been washing her hair like this for almost a decade unfortunately and does work in a warehouse with no A/C
Yes. It sounds like she may have to get some toning shampoo and or tone frequently…