Ordered the “Glostik”, seemed too good to be true so I bought it to test it, total scam. It’s all a marketing strategy for this company; yes, temporarily staining your teeth does work with certain products, and this Glostik was advertised as “113x stronger than our V34 Color Corrector”, that is simply not the case. The tip is also very hard so spreading the actual product on your teeth is close to impossible because it’s like trying to paint a wall with a fork; it just doesn’t work. Also a very noticeable pearlescent look which just looks funky, not worth it, please save your money and look into actual proven whitening methods, often used in clinics.