Closed comedones, dry skin

Please can you recommend relatively cheap products to help with my closed comedones on my forehead? I have dry, sensitive skin. Atm, on my face, I'm using: • "purito green level spf 50" - which is actually spf 19 but I haven't had time to replace my spf. That's a different topic though. I don't think non-comedogenic? 2 or 3 times daily (includes PM) • "Simple protecting light moisturiser" - non-comedogenic. Spf 15 . Every other night? • "Simple moisturising face wash" Tonight I used cerave salicylic cleanser for the first time in about 2 weeks. Because of purging and mt sensitivity skin, I don't like to do once a week. Every now and then, if I have a really bad spot, I may use cosrx hyaluronic acid pimple master patches but not often on my forehead, mostly around my chin. The comedones in question are above my eyebrows, literally all over my forehead in varying sizes. I've always had spots on my forehead but recognise them now as closed comedones. Because of exam stress,lack of sleep and even skin stress, they are getting worse (or at least more noticeable, to me) I'm even getting them on my chin and cheeks. Some are even painful to the touch (I try not to but... still) I have been using a new hair oil for the last month or two. I don't think there's any correlation, but the oil does include many essential oils and other things good for hair but not so much for skin. However, that goes on my hair and most of the spots aren't on my hairline, generally they're spread out on the middle of my forehead. I have seen recommendations from oily skinned people to other oily skinned people but I really want things suitable for my dry skin. Preferably no retinol or benozyl peroxide as I'm only 16. I don't want to damage my skin with too many products or "harsher" treatments so early on. Unfortunately I can't afford a dermatologist :( Please recommend super affordable, easy to find in England products. Thanks 💕