Does a flat iron kill lice and nits? Let’s take a look at why that approach may or may not work for getting rid of adult head lice and their eggs.
It is true that technically, head lice can be destroyed by heat. If they are submitted to a temperature higher than 40 degrees Celsius or 104 degrees Fahrenheit, lice will die.
If you use a hair dryer or a flat iron at such a temperature, you might manage to kill adult head lice as well as some nits.
Can you really get rid of lice using a flat iron? Sure, you may kill adult lice, but even if you manage to kill all the live and adult head lice with a flat iron, it is very improbable that you would be able to kill all the nits.
And if any nits remain alive on your hair, you’ll get newly hatched lice crawling in your hair within about 7 to 10 days.
More importantly, you should know that both adult lice and their eggs are very close to the scalp. And as they live close to the scalp, using heating devices for killing head lice can be dangerous, especially on children.
Why? Because you run a risk of burning your own scalp or your children’s scalp.
Plus, doing this could damage your hair and also destroy more hair follicles; if this happens, your hair will suffer damage for the long-term.
This is why it is really not recommended to use a flat iron for lice.
Now, if you have dead nits on your hair, away from your scalp, using a flat iron can help to make dead nits less visible, especially if you have long hair.
In this case, using a flat iron can be a good idea, when you don’t use it close to the scalp.
Keep in mind that using a flat iron is not an effective treatment against lice, and it can cause a lot of damage to your scalp and your hair.