This is from Walgreens:

The Top 10 NO_NO ingredient List. They sell Ology products that do not have these ingredients in them.

1. Ammonia

2. Chlorine bleach

3. DEA

4. TEA

5. Parabens

6. Phthalates

7. Formaldehyde

8. Nonylphenol ethoxylates

9. Triclosan

10. SLS/SLES