Why does the back side look noticeably whiter than the front when turning the bandana furoshiki over?

The front side shows clear colors and lines, but when flipped over, the fabric shows through whitish on the inside. Some bandana furoshiki from KAMAWANU use an inkjet printing method that sprays pigment ink^[1][2]. Pigment ink generally tends to adhere to the outer surface of the fibers rather than penetrating deeply inside the yarn structure. Because the ink particles mainly stay on the surface, less color reaches the opposite side of the yarn, allowing the fabric's inherently light base to show through^[3].

The difference becomes clearer when compared to nassen fabrics hand-printed using traditional stencils^[4]. Compared to the method of placing a stencil and pushing coloring agents through the gaps in the fabric, inkjet printing penetrates the fibers less, leaving the back side brighter or whiter^[5].