To shrink just the waistband of a hoodie, you can try the following methods:
Hot Water Wash: Wash the hoodie in hot water using your washing machine. Hot water can help shrink the fabric. However, keep in mind that this method may cause overall shrinkage of the hoodie, so it's important to monitor the process closely.
Dryer Method: Place the hoodie in a dryer on high heat. The heat can cause the fabric to contract, shrinking the waistband. Again, be cautious as the entire hoodie may shrink, not just the waistband.
Tailoring: If you want more precise adjustments and have sewing skills or access to a tailor, you can consider altering the hoodie. This involves removing the waistband, adjusting its size, and then reattaching it to the hoodie. It ensures a customized fit but requires some expertise.
Elastic Insertion: Another option is to add elastic to the waistband. This method involves creating a small opening in the waistband and inserting a properly measured and sized elastic band. This allows you to tighten the waistband without altering the original fabric.
Remember to test any method on a small and inconspicuous area of the hoodie before applying it to the entire waistband. This will help you assess the potential results and minimize any unintended damage or shrinkage.