LICE FACTS: EVERYTHING YOU NEVER WANTED TO KNOW ABOUT HEAD LICE

According to the FDA, each year between 6 and 12 million children in the U.S. are infested with head lice. In many of these households, the lice quickly spread to siblings and parents.

FREQUENTLY ASKED QUESTIONS

Do I Have Lice?

Adult lice will be the easiest to spot because they are the biggest. But at the size of a sesame seed, they still aren’t that big. Although lice vary in color, if you see a grayish-white or tan bug crawling through the hair, it is probably a louse. If you look closely at an adult louse, you should be able to see human blood inside it.

Look at the hair strands about a quarter inch (~0.5 cm) off the scalp. See if you can find lice eggs (often called nits) attached to individual hairs. Nits are extremely small. They look like tiny specks and will be glued pretty securely to the hair. If you see any, try pulling them off with your fingers. If you can’t easily pull them off, they are probably eggs and not dandruff.

How Can I Get Lice?

The primary way you can get head lice is when your head comes in direct contact with the head of an infested individual. Head-to-head contact like that doesn’t guarantee that the infestation will spread, but it gives lice the best opportunity to move from the hair of the infested person to your hair.

Head lice don’t jump, swim or fly. Without strands of hair to grab with the claws on their legs, they have trouble getting around at all. However, they can crawl pretty quickly along the hair, so if your hair comes in contact with an infested head, it doesn’t take much for a louse to hitch a ride on a strand of your hair and make its way to your scalp.

How Long Can Lice Live?

Excluding the 8-9 days they spend as eggs, head lice can live for around 40-45 days on your head. As parasites, they feed on human blood several times a day.

If they are removed from their food source – say from getting knocked out of your hair with a brush or your hand – they can survive 24-48 hours. If they don’t find some human hair to crawl back to a new host during that time, they will die.

How Can I Kill Lice?

There are many ways you can kill lice. You can suffocate them, poison them, or dry them out. You can also starve them if you get them away from their food source – your head – long enough (they’ll die within 24-48 hours).

Who Should Get The AirAllé Treatment?

The AirAllé device is intended to kill or remove head lice and their eggs in the hair of adults and children 4 years of age and older. For children under 4, we recommend a traditional comb-out.

Does The AirAllé Treatment Really Work?

Yes! Because it is an FDA-cleared device, we can’t make up efficacy claims that aren’t backed up by clinical data.

What Should I Do After Treatment?

Head lice do not survive long if they fall off a person and cannot feed. You don’t need to spend a lot of time or money on housecleaning activities. Follow these steps to help avoid re–infestation by lice that have recently fallen off the hair or crawled onto clothing or furniture.

  1. Machine wash and dry clothing, bed linens, and other items that the infested person wore or used during the 2 days before treatment using the hot water (130°F) laundry cycle and the high heat drying cycle. Clothing and items that are not washable can be dry–cleaned OR sealed in a plastic bag and stored for 2 weeks.
  2. Soak combs and brushes in hot water (at least 130°F) for 5–10 minutes.
  3. Vacuum the floor and furniture, particularly where the infested person sat or lay. However, the risk of getting infested by a louse that has fallen onto a rug or carpet or furniture is very small. Head lice survive less than 1–2 days if they fall off a person and cannot feed; nits cannot hatch and usually die within a week if they are not kept at the same temperature as that found close to the human scalp. Spending much time and money on housecleaning activities is not necessary to avoid re-infestation by lice or nits that may have fallen off the head or crawled onto furniture or clothing.
  4. Do not use fumigant sprays; they can be toxic if inhaled or absorbed through the skin.

LICE FACTS

  • LICE

    Head Lice – Pediculus Humanus Capitis – is very specific. It can only be found on human heads. And while there are many other types of lice, head lice cannot transfer to another environment and those lice cannot transfer to human heads. Head lice feed on human blood to survive (the source of the itching some people feel) and they live on or near the scalp to maintain their body temperature and incubate their eggs (nits).

  • LIFE CYCLE

    Head lice have 3 stages – nits (eggs), nymphs and adults (click here for photos). Nits are white to brownish and are firmly glued to the hair strand. Adults are about the size of a sesame seed and are usually greyish white or tan, although they may appear red if they have just fed. (see lice life cycle here)

  • ADAPTATION

    Through thousands of years of evolution, lice have become very well adapted to living on the human head. An adult louse has six claws that allow it to move quickly and efficiently up and down a hair strand and through the hair.It can move from one head to another this way, which is why head-to-head contact is the primary way head lice are spread between people. They are very fast and shaped for hiding behind strands of hair, making detection more difficult.

  • INFESTATION

    Lice cannot jump onto you as you pass by. Head-to-head contact is the primary way head lice are spread from person to person. A fertilized female louse will take the opportunity to transfer from its host onto new territory during even brief head to head contact. The female then immediately begins to lay eggs on the new host. When those eggs hatch and the nymphs emerge, they begin to feed and grow into adults in 10 days. At that point, those adults also begin to lay eggs. Over the course of a few weeks, the number of active feeding adults increases exponentially unless the host is treated with an effective pediculosis treatment. A lice infestation will not “run its course.” All lice and nits must be killed to end the infestation.