Talk:Kermes (dye)

Mordants Affect Vegetable Dye Color

Mordants -- chemicals added to the dye bath or applied before dying to the textile fibers with the aim of causing the dye to bind more firmly to the fiber-- affect the color of vegetable dyes. That is, the same vegetable dye, used on two samples of the same type of fiber, but with each sample treated with a different mordant, will often result in markedly different final shades. I mention this because the photo of the wool(?) dyed with kermes in the main article shows a quite light shade and one is not sure if this means a mordant was not used at all,or if it was one giving a particularly light shade. Perhaps other mordants would give a darker shade of red with kermes? It may be appropriate to include a range of photos showing this, as well as notes on each photo documenting what mordant, if any, was used. I am not familiar with kermes so I cannot say if this is the typical shade from it or not, but cochineal, another red insect dye can be much deeper red. British army "redcoats" wore jackets of wool dyed with cochineal on a tin mordant, I have heard. --FurnaldHall (talk) 02:56, 24 May 2009 (UTC)

It may have been a used-up dye-bath. Kermes is a very light-fast colour, so it should be much stronger than that. Unfortunately, I don't have any photos, but adding some would be appropriate. Tin mordant generally brightens the dye, so that would explain the vivid red. —Preceding unsigned comment added by M.paprocki (talk • contribs) 17:41, 27 July 2010 (UTC)

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