Below is a very helpful tip on removing tea stains from almost all white clothes.

Step 1:  Immediately after the tea spill evenly spread table salt over the stained surface.

Step 2:  Spray a little clean water (just enough to moisten the salt and the scarf).

Step 3:  Gently rub the affected area with your hands till the stain disappears.

Step 4:  You might need to add more salt or water as per requirement.