If you have a Sephora nearby, they sell certain WEN formulas there. I know for sure they sell the Sweet Almond Mint in-store, and they might sell the Cucumber and Fig too (those might just be online though? I can't recall.)
You can also try either the Pantene or Herbal Essences cleansing conditioners. I have personally used the Pantene and found it to be okay for short periods of time. Another option is just cleansing using a traditional conditioner (people seem to like Suave Coconut for this).
Hope this helps!