For stains on some old photos that have been stored for a long time, they can be removed by washing. The steps are as follows:

1. Prepare a basin of water. We first put the stained photos into clean water, and then gently wipe and clean with cotton swabs or paper towels;

2. When cleaning photos in water, be sure to touch them gently and never rub them hard;

3 . Do not soak the photos in water for too long. Wipe them immediately after entering the water, otherwise the color of the photos will be damaged. After wiping, you will find that the stains on the photo have disappeared under the action of water. Next, take out the photo, paste it on the mirror to prevent the photo from curling and deforming, and then use the hot air of a hair dryer to dry the photo.

Tips:

First, the hair dryer should not be too close to the photo, and should be kept about 30 centimeters away;

Second, the temperature of the hot air is best controlled at a low setting Or mid-range, not too hot. After the surface of the photo is dry, remove the photo from the mirror, place it on a flat surface, and then use a hair dryer to dry the other side of the photo. It is also required that the temperature of the hair dryer is not too high and it is about 30 cm away from the photo. After such processing, you will find that not only are the handprints on the photo gone, but the photo is still intact.