Purchase Date: Around 2023 ★ I purchased this after watching Azusa Nagatomo's YouTube video. I bought a second salt pillow after this one, but I didn't use it, so I'm selling this one. I will include the pillowcase, but it is not new. The salt pillow was quite expensive. ★ When I used this pillow, my brain felt clear and refreshed. ※ If you don't need the pillowcase, please let me know in the comments.