Denim fabric, renowned for its durability and cultural significance in fashion, experiences substantial physical and visual transformations when subjected to repeat laundering. Among the various laundering parameters, washing temperature has emerged as a critical factor influencing the long-term performance and aesthetic retention of denim textiles. This study presents a multifactorial analysis aimed at evaluating the impact of washing temperature variations on the structural, mechanical, and aesthetic properties of denim fabric.

Standardized laboratory tests were conducted to assess key performance indicators, including dimensional stability (shrinkage), tensile strength, abrasion resistance, pilling resistance, and colorfastness. Denim specimens were exposed to controlled laundering cycles at varying temperatures, followed by evaluations adhering to ISO and AATCC testing protocols.

Findings indicate a significant correlation between elevated washing temperatures and detrimental changes in fabric properties, including increased shrinkage, pronounced fading, diminished tensile strength, and surface degradation. In contrast, lower temperature settings were found to preserve dimensional and color stability more effectively, albeit with potential compromises in cleaning efficiency.

This research underscores the critical role of temperature management in laundering practices to sustain both the functional integrity and visual appeal of denim garments. The outcomes offer practical implications for textile producers, apparel designers, and consumers aiming to enhance denim longevity through informed care strategies.