I used this 1-2 times a week after purchasing it. My skin condition improved, and I found it very useful, but I'm selling it because I no longer have time to use it after having a child. I used purified water when using it, so I think it's been kept clean. Of course, you can use tap water. There are no instructions or aroma chips. You can find the instructions online. You don't need the aroma chips to use it. Amazon reference price: 25,998 yen The following is quoted from the Panasonic official page: Authentic hot and cold esthetics that allow you to choose your skin finish. 5 automatic hot and cold courses to choose from to suit your desired skin. Equipped with the "Barrier Skin Course★2" to enhance the moisture barrier when you feel skin fluctuations★1. New fragrances added to the aroma tablets (tea tree, ylang-ylang) ★1 When the skin becomes sensitive due to seasonal changes or changes in living environment ★2 A gentle course that suppresses sudden changes in skin temperature by repeating warm steam and cool air Panasonic Steamer (Pink) Panasonic Nano Care/W Hot and Cold Esthetics EH-SA97