I'm 45 and finding that no matter how I cleanse moisturise and prime, my base always seems to sit on my skin rather than blend into it. I have patches that slide off and patches that are flaky even though the skin underneath is not dry and actually feels quite oily. Also the foundation seems to accentuate my wrinkles 
I'm using urban decay foundation mixed with a little Clarins bb cream and put on with a bamboo brush. I need fairly good coverage as I've got acne scars but my skin looks oily with a dry crusty layer over the top.
Help anyone?