hair and skin super oily all of a sudden ?

Hi everyone. It’s my first time posting here so hopefully this is the right sub. Lately my skin and hair has been super super oily. Skin immediately oily, and if I wash my hair in the morning it can be oily by the evening or next day.

I haven’t changed my haircare or skincare routine at all. I’ve got sensitive skin and fine dry hair. At first I thought it was usual skin outbreak before & during my period. But then it never stopped, and got worse. It’s been a month ish now and I’ve exhausted all options I can think off. I tried for a week only applying moisturiser and hyaluronic acid. I did my usual routine, I tried a homemade / organic hair mask for build up to see if that was right. I tried buying a salicylic acid face mask, none of these things did anything. I tried adding niacinamide to my nighttime routine, it didn’t change anything.

Any thoughts? I’m about to run out of my usual shampoo and conditioner duo, so I wanted to get some advice in case I need to buy some new products.