Red and flaky skin

I’M 41 and married. I noticed that the elasticity of my skin began to slack rapidly when I hit my 40s. My face not only looks dull and tired, but dry with blotchy patches and dark spots. Most times, my cheeks look red and flaky, and it itches. I feel depressed each time I look into the mirror.

I really want to know what is the cause of my cheeks’ redness which make me look so unhealthy. Is it due to body “heatiness”, or the hot and humid weather? Or perhaps it’s due to using unsuitable products? I have tried many types of skincare products and facial treatments, but my skin condition seems to be deteriorating.