First put the flower nail under the faucet and wash it clean. The flower nail may be closed, so this step can only wash off the sand on the flower nail case.

2. Salt water

Then soak the flower shell in salt water, and the flower shell will crack and spit out the sand inside.

3. Sesame oil

Then pour out the salt water, replace it with clear water, and then drop sesame oil. Flower nails can spit out sand.

Step 4 rinse with water

Then put the flower nail under the faucet and rinse it clean.