I don't want wrinkles on my forehead!
It is unfortunately not possible to fully prevent wrinkles on forehead with topical products, especially if your mimics is active in this area. So if you are really serious about delaying them as long as possible, you could consider a low-dose botox injection in the area (just make sure to find a trusted practitioner to perform it).
In terms of topical products, your number one friend is a daily broad spectrum sunscreen. I'd also recommend to switch up your products to include a retinoid serum daily in the PM. An example routine is here: https://whatsinmyjar.com/posts/975/top-notch-anti-aging-routine-with-alternatives-to-skinceuticals