Head Lice Treatment: The Nuvo Method

The Nuvo method is a way to treat head lice without pesticides. It uses a common, non-medicated skin cleanser that is applied to dry hair and then blow-dried, which coats and suffocates the lice. Because it works physically rather than with a chemical, lice cannot become resistant to it, which is helpful now that many lice no longer respond to older over-the-counter products.

What Are Head Lice?

Head lice (pediculosis capitis) are tiny insects that live on the scalp and feed on blood. They are very common in school-age children, spread mainly through head-to-head contact, and are not a sign of poor hygiene. The main symptoms are itching and, sometimes, seeing the small lice or their eggs (nits) glued to hair shafts near the scalp. Head lice do not carry disease, but they should be treated to stop the itching and the spread to others.

What Is the Nuvo Method?

The Nuvo method is a dry-on, suffocation-based treatment first described by a dermatologist, Dr. Dale Pearlman, and published in the journal Pediatrics in 2004. Instead of a pesticide shampoo, it uses Cetaphil Gentle Skin Cleanser, a plain non-medicated cleanser, applied to the hair and dried in place with a hair dryer. As it dries, it shrink-wraps the lice and blocks their breathing holes, suffocating them. In the original study, three weekly treatments cleared lice in about 95% of children.

Because there is no insecticide, lice cannot develop resistance to this method, and there is no chemical pesticide on your child's scalp. Many families prefer it for that reason.

Step-by-Step Instructions

You will need a bottle of Cetaphil Gentle Skin Cleanser, a regular comb, a towel, and a hair dryer. Plan for about 45 minutes.

1. Apply to dry hair. Work the cleanser thoroughly into dry hair, saturating the scalp and coating every hair from root to tip. Long or thick hair may need most of a bottle.
2. Comb out the excess. Use a regular comb to remove the extra cleanser, then wipe off as much as you can with a towel. A thin, even coating should stay on the hair.
3. Blow-dry until completely dry. Dry the hair fully with a hair dryer. This is the step that kills the lice, so do not stop early. Thick hair can take 15 minutes or more. The hair will feel stiff when it is done.
4. Leave it on overnight. Leave the dried cleanser on for at least 8 hours, so your child can sleep with it in.
5. Wash out in the morning. Shampoo the hair as usual to remove the cleanser.
6. Repeat weekly for three weeks. Do the full treatment once a week for three weeks in a row. This catches any lice that hatch after the first treatment.

Why It Works

Older over-the-counter lice shampoos rely on pesticides, and in many areas lice have become resistant to them. The Nuvo method works mechanically: the dried cleanser encases the lice and plugs the tiny holes they breathe through, so they suffocate. Because it is not a chemical treatment, lice cannot adapt to it over time.

Stop the Spread

• Check everyone in the household and treat anyone who has live lice.
• Wash recently used bedding, towels, hats, and clothing in hot water and dry on high heat. Items that cannot be washed can be sealed in a plastic bag for two weeks.
• Soak combs and brushes in hot water for 10 minutes.
• Avoid head-to-head contact and do not share hats, brushes, or hair accessories until everyone is clear.

When to See a Dermatologist

See a provider if lice keep coming back after treatment, if the scalp becomes very red, crusted, or tender (which can mean a skin infection), or if you are not sure whether what you are seeing is lice. Belaray Dermatology can confirm the diagnosis, guide treatment, and prescribe a prescription option if needed.

Frequently Asked Questions

What is the Nuvo method for head lice?

The Nuvo method is a non-pesticide way to treat head lice. A thin, non-medicated skin cleanser (Cetaphil Gentle Skin Cleanser) is applied to dry hair, combed through, and then blow-dried onto the hair. As it dries, it shrink-wraps and suffocates the lice. It is left on overnight, washed out the next morning, and repeated once a week for three weeks.

Does the Nuvo method use pesticides or insecticides?

No. The Nuvo method uses only a common over-the-counter skin cleanser and a hair dryer. It works physically by coating and suffocating the lice rather than with a chemical pesticide, so lice cannot become resistant to it and there is no insecticide exposure.

Does the Nuvo method kill lice eggs (nits)?

The method mainly kills live lice, and it may not destroy every egg. That is why it is repeated once a week for three weeks, which catches lice that hatch after the first treatment. Combing the hair with a fine-tooth nit comb between treatments helps remove eggs.

How often do I repeat the Nuvo treatment?

Repeat the full treatment once a week for three weeks. The weekly schedule targets any lice that hatch from eggs the first treatment did not destroy, breaking the life cycle.

Is the Nuvo method safe for children?

The cleanser used is a gentle, widely available product, and the method avoids pesticide exposure, which many families prefer, especially for young children. Keep the product out of the eyes, supervise the blow-drying, and check with your provider if your child is very young or has sensitive or broken scalp skin.

Where can I get help with head lice on Long Island?

Belaray Dermatology evaluates and helps manage head lice at its Hicksville (Nassau County) and Stony Brook (Suffolk County) offices, including for cases that have not cleared with over-the-counter treatments. Call or text (516) 822-7546 to be seen.

Related reading: Pediatric dermatology and eczema in children.