Below are some preventive NON TOXIC measures you can take to stop curly build up:
1. Invest in a hair catcher. You can find them at your local drug store for no more than $5.00. You can even find some bath mats here that have them built in for about double the price.
2. Once every 6-8 weeks, mix 3 cups of boiling water and 1 cup of baking soda and pour down your drain. This boiling water will make the baking soda more alkaline and break down anything that may begin to block your drain.
3. Washing soda is also a great way to prevent drain clogs, specifically clogs caused by hair. This can be used as often as once a week. Pour 1-2 cups down the drain and flush down with a thorough amount of water.
4. For drains that are already clogged follow step 2 but add 1 cup vinegar. The bubbling affect aides in the removal.
Let me know how it goes!