I found this on this site and purchased it for 4550 yen (about half the price of the genuine product). I was disappointed because the item I received was different from the genuine product, but I used it a few times since I had already bought it. It seems you only need to use it for 10 seconds. For those who want to try it out or are interested, please do! *It arrived without a box or instructions from the beginning, so I will wrap it in bubble wrap for shipping.