Use a hairdryer to warm the clothing fibers and allow.
How to get pine sap out of fabric. Use a dull knife to scrape off as much sap as possible. Most any solvent dissolves pine sap. Mix a couple teaspoons of natural dish soap or laundry detergent with a cup of hot water.
Rub in the paste and let sit for an hour. Tips for pine sap removal. How to remove sap with detergent and baking soda paste.
As a lifetime woodworker who also owns a sawmill, i wade in pine rosin/sap often. Just pour a little vegetable oil into your hand and rub it into the sappy area. Grab a new clean cloth and apply a small amount of dish soap to one corner.
Dab the alcohol over the sap until the sap comes off. You simply soak a towel or cloth with the detergent and then apply it evenly on the sap stains. There are different methods on how to get pine sap out of clothing, which is the worst offender for sheer stickiness.
Moisten a wash cloth with the oil and apply it to the hair with the sap in it. Again, be sure to rinse the clothing afterwards. Add a little mild dish soap to another corner of the cloth dampened with water.
Work slowly and lightly to make sure you don’t create a scratch. If the soap forms a paste add a small amount of water. Repeat this to remove as much tree sap as possible.