Speaking to Today.com Caldwell said: "Freezing your tights is a quirky, yet budget-savvy way to help keep your tights longer, (and stay) run-free, lint-free and vibrant in colour.
"It's definitely a trick to try!"
Freezing tights is a form of cryogenic treatment in which sub-zero temperatures make the molecules in the fabric stronger.
The idea is that when the tights are brought back to room temperature the molecules rearrange themselves. This makes the material more uniform and reduces weak spots in the nylon that are more susceptible to snagging.
Caldwell says that once you have frozen your tights you won't need to freeze them again.