Article Highlights• Performance of toxic crosslinker DMDHEU and its alternative BTCA was assessed on cotton fabrics • Shade change of the crosslinker treated dyed fabrics were assessed and compared • Performance of the alternative catalyst of sodium phosphate for BTCA was also examined • Both crosslinkers impart similar effect on the easy care and tensile strength retention Abstract Performance of colored cotton fabrics dyed with sulphur, vat, direct and reactive dyes was investigated using two crosslinkers. DMDHEU was used as a formaldehyde-based crosslinker and BTCA was assessed as a zero formaldehyde alternative. The shade change of the fabrics treated with both crosslinkers was comparable and in acceptable range apart from all sulphur dyes and two reactive dyes. However, the shade change of the sulphur dyed fabrics was significantly improved when typical sodium hypophosphite based catalyst for BTCA was replaced with sodium phosphate. In addition, tensile strength and easy care performance of the crosslinker treated dyed fabric was also assessed.Cotton is among the most imperative apparel fibers of the world due to it numerous end use performance advantages [1,2]. Typically, cotton fabric is first dyed and then finished with easy care crosslinkers to achieve the desired color and wrinkle free performance. Easy care crosslinkers are among the most commonly used finishes for cotton to overcome the drawback of wrinkling of cotton especially after washing [3][4][5]. Unfortunately, crosslinkers impart negative effect on the shade of the dyed fabric [6-9]. Requirement of acidic pH, metal catalyst, high temperature and longer curing time are some of the major reasons for the observed change in the shade of dyed fabric after easy care crosslinker treatment.Formaldehyde based crosslinkers are the most commonly used easy care crosslinkers for cotton due to their excellent performance and low cost [10,11]. Unfortunately, formaldehyde has toxic issues associated with its use. Formaldehyde can cause difficulty in breathing, headaches, skin irritation, but most problematic of all, it is a human carcinogen [12][13][14][15][16][17][18]. Therefore, zero add-on formaldehyde crosslinkers are gaining importance. Consequently, intensive efforts have been undertaken to develop environmentally friendly finishing systems.Polycarboxylic acids (PCA) are formaldehydefree crosslinking agents and BTCA (Butanetetracarboxylic acid) is the most effective among them [19,20,26]. Sodium hypophosphite (SHP) was identified as being the most effective catalyst from the range of catalysts evaluated [21][22][23]. However, SHP is a strong reducing agent and consequently has a negative effect on the shade of the dyed fabric [24--25]. Shade change is very prominent in case of sulphur dyes due to the strong reducing nature of SHP.