<p>The current age is the time of polymeric materials which have gained attraction globally due to their sustainable nature. In this study, adorable polymeric textile materials, such as silk fabric and wool yarn, have been dyed with red sumac-based tannin natural dye. Extraction was made in a suitable medium and after 5&#xa0;min microwave (MW) treatment, and dyeing was done and optimized. For developing colorfast shades, the polymeric materials were dyed before (pre) and after (post) mordanting with eco-chemical and bio-organic mordants. The results show silk fabrics pre-mordanted with 1.5% of Fe²⁺, 1% of Al³⁺, 1.5% of madder, and 2% of oak extracts to have developed colorfast shades. Silk fabric post-mordanted with 2% of Fe²⁺, and 1% of Al³⁺ salt, 2% madder and oak extracts as eco-mordants also furnished colorfast shades. In comparison, wool yarns pre-mordanted with 1.5% of Fe²⁺ and 2% of Al³⁺ salt, 1% of madder and 2% of oak extracts have given colorfast shades, whereas after dyeing, 2% of Fe²⁺ and Al³⁺ salt, and 1% of madder, and 2% of oak extracts have furnished excellent colorfast shades. The sustainable isolation techniques and the addition of eco-mordant have made the dyeing process greener and cleaner.</p>