Needles for teeth whitening molds from the well-known Opal company. Two products were mistakenly purchased. Market price is around 294. Effective results, you can search on YouTube. The product is stored in the refrigerator. The needle was opened and used very simply, almost not worth mentioning. I closed it because I have a mint flavor. Al-Arja Al-Wusta neighborhood. Serious buyers, we can negotiate.