In 1890 his discover was patented by Basf, which is still one of the major producers worldwide.
The pricipal characteristic of indigo is its lack of fastness when washed, because this dye, instead of fixing itself on the fibers, settles in the form of microscopic granules.
This is why old jeans fade and we actually like them better this way; this has motivated the development of new techniques for artificially wearing out denim.
dressspace blog Un nuovo sito targato WordPress
