1. Wash: Immediately rinse the wine glass with warm water, especially if the wine stain has not dried. Do not use superheated water, as this may cause the glass to crack. If there are more stains attached, gently scrub the inside of the glass.

2. Use mild detergent: If needed, use a mild detergent to clean the glass, then rinse thoroughly to ensure that no detergent remains.

3. Dry carefully: Gently dry the glass with a soft, fiberless cloth or paper towel. Try to avoid using cloth with fiber to prevent fiber residue in the cup.

4. Storage: Make sure the glass is completely dry before storage, you can put a layer of clean paper towels on the bottom of the glass to absorb moisture. The mat is then placed on a wine rack or wine glass hanger to ensure that the wine glass does not collide or get damaged.

5. Avoid the dishwasher: It is best not to put valuable crystal or lead-free crystal wine glasses in the dishwasher, because the heat and intense water pressure of the dishwasher may damage the cup.

6. Regular inspection: Regularly check the glass for scratches, cracks or other damage for early repair or replacement.

Proper handling and storage of wine glasses can extend their life, ensuring that they always maintain transparency and integrity.