Sun damage can start to show itself as early as in your late teens or early twenties.  As the years roll on it only gets worse - the more years you allow yourself to sit in the sun.  Start wearing sunscreen now - every day, year round to minimize the damage.  Regular exfoliation, brighteners and tyrosinase inhibitors that minimize dark spots and are very useful when used regularly.  If your skin feels tight or uncomfortable it is a sign of dehydration (lack of moisture in your skin).  This could mean a damaged barrier to the surface of your skin where there is transepidermal water loss (TEWL).  Often this is from using products which are just too strong for your skin type. Choose products that are soothing and hydrating for your skin.

Are you drinking enough water? 
You may be getting your eight glasses a day, but that doesn't mean that the water is going to your skin.  Matter of fact, the skin is the last organ to get that water. Keep drinking water but make sure you are including humectants in your skincare program.  Humectants are water loving ingredients like glycerin and hyaluronic acid.  These ingredients grab on to water and hold it in the skin. You need to follow up with an emollient based moisturizer to seal in that moisture. Regular exfoliation with a gentle, hydrating and brightening AHA will help remove those dead, dry layers - revealing brighter, fresher skin.