As a first step, add a Channel Mixer adjustment layer, check the "Monochrome" checkbox, and enter 0, +100, 0 for the three values. Then mask it onto the shirt. Show me the result.
You'll find you don't need to be too precise with your masking around the hair. That's the beauty of this method.
You will need to be precise with a small brush along the straighter edges. Use this.