This was a gift, but since it doesn't prevent cavities, and I don't particularly like it, I'm putting it up for sale. The following is an excerpt from the product description: SALTRAIN is a natural oral care brand from Korea, and its toothpaste using gray salt (natural sea salt) has become a hot topic. The simple blue and white design is also perfect for social media. It's a popular item for those with a high sense of beauty. ◇ My actual experience using it | Honestly, it was salty! ▪ It doesn't foam much, and you can brush carefully. ▪ The salty taste is quite impressive. ▪ The mint stimulation is mild, and the scent is natural. However... Since it doesn't contain fluoride, it's difficult to expect cavity prevention effects. The taste may be a matter of preference. Those accustomed to Japanese toothpaste may be surprised. ※ The reason why Koreans have white teeth isn't just the toothpaste! "Koreans have white teeth, so this toothpaste might be effective too." Some people may have thought that. Certainly, Korea is a beauty powerhouse, but white teeth don't necessarily mean the toothpaste is effective. In fact, in Korea, brushing your teeth 3-4 times a day is the norm. There is a culture with a very high awareness of self-care in the background. On the other hand, the average Japanese person brushes their teeth about twice a day. In other words, the white teeth of Koreans are more likely to be influenced by the difference in "care habits" rather than "the items used." ◇ From a dentist's perspective | Who is SALTRAIN suitable for? I felt that SALTRAIN is suitable for people like this: ✔ Those who like toothpaste with little foam. ✔ Those who prefer natural products with scents and tastes that aren't too strong. ✔ Those who value organic and design. However, for those who expect cavity prevention or whitening effects, items containing fluoride sold exclusively at dental clinics are more reliable.