For the past three months, I have been getting adult acne for no apparent reason. Huge pimples started popping out over my T zone area and I really hate it. Every time I look in the mirror, I would think back that I have never gotten such pimples during my younger days. I suspect it could be hormone change that causes this, but how long will it last? I can only rely on pimple gel and concealer for the time being.