Natural Stain
* These are very few in numbers.
* Examples :
1) Hematoxylin (Natural Black 1) , a naturally occurring flavonoid compound derived from the logwood tree, Haematoxylon campechianum.
2) Carmine (Carmine red) a natural red dye extracted from the dried females of the insect Dactylopius coccus var. Costa (cochineal).
Tags:
Natural_Stain