keratin treatment for long straight hair

Hello there

I heard that keratin treatment is mostly for curly dry hair. I used to have straight, smooth, shinny hair, never had problems with splitting ends but the texture has changed with age. Now I have dry, thin, frizzy, dull looking hair. I have tried moisturizing stuff, deep hair conditioner, some hair cream and butter, olive oil and so on. It's all make my hair looks flat and greasy. I have oily hair normally but now it's only near the scalp and the rest is dry and tangling thin hair. I would like to know if keratin treatment can help a bit to bring some healthy look to it? Thank you.

Keratin is found naturally in our hair and it helps protect and smooth the hair. Some treatments can eliminate frizz repair shine and help with damage. If you do a keratin treatment it may help strengthen your hair and smooth it out which may help with the tangles. I use a leave in keratin treatment by Chi it