Good product, not as messy as I thought!
This product is good, has no bad taste and is not as messy as I thought. I do believe my teeth are white than they were prior to using product. However, know all peoples teeth are different, mine are not as white as the before and after pics provided by Zen. I use the product for maintenance now, not everyday as before. Info like the product and would recommend to others.
Rating: 3 stars