Alder buckthorn bark comes from the glossy buckthorn or frangula alnus shrub. It is native to Europe and invasive in North America.
25% WOF gives excellent colors, you can use up to 100% WOF for more intense hues and re-use the dye bath.
Buckthorn bark can be used without a mordant, it is a substantial dye. Mordanting with alum will improve light-fastness. Ph sensitive.
In an alkaline dye bath (pH 10-11), alder buckthorn will give fantastic brick reds, and no heat required! Just let the fibers ferment together with the bark. In an acidic bath, you will create golden, bright yellows.
Light-fast on protein but not on cellulose.
Heating above 60ºC will give you cinnamon reds and browns.
Our Rhmnus frangula natural dye bark comes from Europe, it is an organic, renewable dye source, with a Co2 positive footprint.
Active dye component; anthraquinones.
Other uses;
The bark (and to a lesser extent the fruit) has been used as a laxative, due to its 3–7% anthraquinone content.
Packed in a resealable bag of 100 grams (3.5oz)
