New, unopened product. Dye from Furuiro no Bi: Indigo dyeing, indigo vat dyeing dye solution, large capacity 500ml An innovative natural dye that dyes with water alone. It has a very beautiful color and you can adjust the intensity by diluting it with water. When close to the undiluted solution, it dyes a dark navy blue, and when diluted with water, it dyes a pastel light blue, allowing you to express a wide range of blue gradations. You can enjoy various expressions of blue with this one color. Retail price: 5,280 yen (tax included) You can also enjoy mixing with other colors to create colors like purple and blue-green. Natural fabrics such as cotton, silk, linen, rayon, and wool can be dyed. Synthetic fibers cannot be dyed. It says that you can dye up to about 2kg of fabric, but since that's for the undiluted solution, you can dye even more depending on the dyeing intensity and method. I like the pale pastel dyeing colors and the mottled dyeing method, so with this amount of dye solution, I can dye about 10kg worth. [Important Notes] I purchased this several years ago and have stored it in the refrigerator. Therefore, the expiration date is April 2021, which is far past the deadline. I have dye with an expiration date of 2020 at home, and I've stored it the same way, and it's currently usable without any problems, and the fermentation smell is normal, so I don't think there will be any problems with use, but please refrain from purchasing if you are concerned. Underdyeing agents and auxiliary agents are not included. Please use soy milk or the dedicated underdyeing agent from Furuiro no Bi. Dyeing instructions and materials are not included. Please understand that only the dye will be delivered. In the summer, there is a possibility that fermentation will progress during shipping, so if you are considering purchasing, please purchase it during this cold season and store it in the refrigerator (vegetable compartment is also acceptable). Shipping via Mercari. Thank you.