Help... I'm Drying Up

If a medication lists a side effect, I get it. As I was researching colon cleanses, everything I read said the biggest side effect is dehydration. I drink a lot of water. I drink more than the suggested amount, but my skin is cracking and peeling really bad. My lips are chapped and my hair is dry. I have dry patches on my face. I do live in Utah which is the second driest state in the US, but this isn't normal for me. I'm trying to drink more and lotioning like crazy, but it's not doing any good yet :(