The green husk of Juglans sp., is an agricultural waste with a source of organic compounds that provide naturally coloring agents. Natural pigments represent an alternative to beauty products most of which contain allergens and carcinogens. The objective of this study was to evaluate the effectiveness and color loss of a dye using extracts from the pericarp of Juglans sp. in strands of bleached hair. Dried and ground pericarp extracts (10% w/v) based on water, ethanol, and methanol, were obtained and evaluated on bleached hair strands using hydrogen peroxide. Color change was assessed using the Fisher-Saller scale by assigning a number instead of a letter to each treated hair strand. The results of the modified scale were evaluated by analysis of variance and color loss was recorded by washing each strand 30 times. As results, no significant color loss was found after 30 washes with detergent; both ethanolic and methanolic extracts developed dark colors (U-Y on the Fisher-Saller scale, 21-25), while aqueous extracts developed ashy colors (M-O on the Fisher-Saller scale, 13-15). There is no commercial green peel-based hair dye on the market. This research shows a semi-permanent formulation as an ecological option to synthetic dyes. Keywords: Aloe vera, Euphorbia antisyphilitica, Fisher-saller, mordants, synthetic dye.