The 3 Oysters inks from South Korea are made using water-based dyes and are pH neutral and non-permanent. The 38ml glass bottle is square in shape with a tilted bottom corner for ease of filling.
This dark blue color, Hangangmul, is a Geographical Color of Seoul. It represents the Han River across the middle of the Capital City of Seoul. The color is reminiscent of the deep blue river water flowing gently across from east to west of Seoul.