Careful! It stains!
Overall, I am happy with this purchase. It works as advertised - and it was brushed away completely with proper brushing (no lingering purple teeth). Here's where I express caution - 1) while it didn't stain my white sink, it didn't rinse off easily even though I rinsed it immediately! I almost freaked but it did come off once I got in there with a rag. Who knows what would have happened if I hadn't cleaned it right away - hopefully nothing, but I wouldn't want to find out! It is easily resolved - I fill the sink with a little water and keep the water running so that way the dye never really sits on the sink surface. No issues at all then. 2) While it brushes cleanly from your teeth, our tongues were absolutely stained purple and no amount of tongue scraping removed that! Also easily solved - we only use it at night before bed and it is gone by morning. Don't use it in the morning unless you want to go to school or work with a dark purple tongue! Wish I could have spent less buying a smaller pack. Overall, happy with the purchase!
Rating: 4 stars