How are the effects of ingestible collagen or inner beauty products?

How about the effects of ingestible collagen or inner beauty supplements for summer skin care?

Now that summer has arrived, I sweat a lot, and due to the air conditioning, my skin feels oily on the surface but parched underneath. No matter how much I reapply cosmetics, they just sit on the surface, so I am considering taking this opportunity to start an 'inner beauty' routine to tackle this internal dryness.

Many people around me have recommended oral collagen products, and I am curious if anyone has tried them and seen improvements in skin elasticity or hydration. There are so many types that I have absolutely no idea which formulation (liquid, powder, pills) or ingredients to choose.

I would like to know if inner beauty products really help with managing dry, dull skin during the summer. If you have any ingredient combinations you would recommend, please feel free to share them!