Speaking of tea pillows, staff at the Hangzhou Tea Quality Inspection Center suggest that making your own tea pillow at home is the safest and healthiest option.
The specific method is:
Use green tea residue, white tea residue, yellow tea residue, or oolong tea residue. Dry them in a cool, ventilated place, not under direct sunlight, as sunlight will cause the tea’s aroma to dissipate and reduce its effectiveness.

Teach You How to Make a Healthy Tea Pillow
The pillowcase is best made of cotton or mulberry silk. The pillow should be 50 cm long and 30 cm wide.
A special reminder: the tea residue inside the pillow should be replaced every three months, and the tea pillow should be aired frequently. It is recommended to use aged tea, as aged tea has anti-inflammatory and heat-clearing effects. However, aged tea may also contain harmful substances, so it is best to rinse the tea with hot water before use to sterilize it.