Lichen-derived dyes are natural colorants extracted from various species of lichens, which are symbiotic organisms made up of fungi and algae. These dyes have been used for centuries in textile and craft applications, providing a range of colors from muted earth tones to vibrant hues. The dyeing process typically involves boiling the lichen in water to release its pigments. These dyes are valued for their eco-friendliness and sustainability, as they are biodegradable and non-toxic. Additionally, lichen-derived dyes can produce unique shades that vary based on the type of lichen used, the mordants applied, and the dyeing technique employed.