Why is my skin greasy in the summer and dry and flaky in the winter even if I put on a moisturizer?

Do any of you ever suffer from this? Greasy skin in the summer without moisturization and dryness/flaky skin in the wnter even though you moisturized? Is it common as a teenager/17-18 years old?|||I know that chlorinated water is very bad and cause dry skin. I would suggest that you read up on this here


http://www.gtawater.com/index.asp?pid=11鈥?/a>





I use a shower filter myself and know that it cuts down on dry skin in the winter.