First, the protective film of the goggles has fallen off. If there is always fog, you can use antifogging agent instead of buying it.

Second, self-made anti-fog spray.

(1) Professional antifogging agent can be used;

(2) You can do your own anti-fogging.

1, production method:

(1), 30ml of glycerol and10ml of soap solution, and mix them evenly;

(2) Add a few drops of turpentine and stir evenly for later use.

2. How to use:

(1), when in use, apply anti-fog on the lens;

(2) Wipe with a mirror cloth, and the anti-fog can last for 3-4 hours.

(3), the simplest method;

Apply soap evenly to the glasses, and then dry them with a mirror cloth to prevent fogging for a short time.

(4) Anti-fogging method of shampoo:

(1), put a small amount of shampoo in the goggles before entering the water;

(2), put a little water;

(3) Apply the shampoo in the goggles evenly with your fingers until it bubbles;

(4) Rinse the foam with clear water.

(5) Saliva antifogging method;

(1), saliva also has a good anti-fog effect;

(2) Spit saliva on the goggles lens;

(3) Wash with water, which is a good anti-fog method.

(6), detergent antifogging method.

(1). Wash the inside of goggles with a small amount of detergent and dry it in the air.

(2) Take a fresh egg, break a small hole, and let the egg white flow into the goggles to make it evenly distributed;

(3) Pour out the excess egg white and dry it.

3. Caution: Do not touch or wipe the mirror inside the swimming glasses with your hands, which can be used for a long time.