What is in Nix Ultra's hair treatment solution?
Contrary to some assumptions, the permethrin content in the hair treatment solution of Nix Ultra is zero. The active ingredients in the hair solution are dimethicone and C12-20 isoparaffin, which are silicone-based compounds. This formulation represents a departure from traditional pyrethrin- or permethrin-based products, which function as neurotoxins for lice. Instead, the silicone-based formula works by coating and suffocating the lice and their eggs (nits), making it an effective option against pesticide-resistant "superlice".
The difference between Nix Ultra and other Nix products
It is important to recognize the different products that exist under the Nix brand name. The traditional Nix Crème Rinse, for example, is a 1% permethrin lotion designed for topical application to the scalp. It kills lice but may not be as effective against newly hatched nymphs as permethrin-resistant strains have become more prevalent. Nix Ultra, on the other hand, is specifically marketed as a pesticide-free treatment for superlice and uses a different mechanism of action entirely.
A note on the Nix Lice Killing Spray
While the Nix Ultra hair solution is permethrin-free, some Nix Ultra kits also include a separate Nix Lice Killing Spray for treating household surfaces. This spray does contain permethrin, typically at a concentration of 0.25%. It is crucial to note that this spray is not for use on humans and is intended only for items that cannot be laundered, such as furniture and bedding. This distinction is critical to avoid confusion regarding the use and ingredients of each product.
Comparing Nix Ultra to other lice treatments
When choosing a lice treatment, considering the active ingredients and resistance patterns is key. Over the past few decades, lice have developed resistance to pyrethroid pesticides like permethrin. For this reason, many non-pesticide, suffocation-based treatments like Nix Ultra have emerged as popular alternatives.
Comparison Table: Permethrin vs. Dimethicone for Lice Treatment
| Feature | Permethrin-based (e.g., standard Nix) | Dimethicone-based (e.g., Nix Ultra Hair Solution) |
|---|---|---|
| Primary Active Ingredient | Permethrin (1%) | Dimethicone |
| Mechanism of Action | Neurotoxin, paralyzing and killing lice | Suffocation, coating and obstructing the lice's breathing apparatus |
| Effectiveness on Superlice | Lower effectiveness due to increasing resistance | Specifically targets and kills pesticide-resistant superlice |
| Effectiveness on Nits (Eggs) | Kills some nits, but manual combing is still necessary | Helps loosen nits for easier removal during combing |
| Treatment Process | Apply to damp hair, leave for 10 minutes, rinse, and comb | Apply to dry hair, leave for 10 minutes, wash with regular shampoo, and comb |
| Pesticide Status | Contains a pesticide | 100% pesticide-free |
How to use Nix Ultra hair solution
The application process for Nix Ultra hair solution is straightforward and can be a single-step treatment for the hair and scalp:
- Saturate the hair and scalp with the Nix Ultra solution, ensuring complete coverage, especially behind the ears and at the nape of the neck.
- Wait for 10 minutes. Use a washcloth to protect the eyes from the solution.
- Wash the hair thoroughly with a regular shampoo and warm water. A conditioner is not needed, as the solution helps detangle the hair.
- Comb out the dead lice and nits using the provided lice removal comb.
- Recheck the hair after seven days to ensure all lice and nits are gone. Repeat the treatment if necessary.
Conclusion
While the Nix brand offers products containing permethrin, the Nix Ultra hair solution is a separate, pesticide-free product that uses dimethicone to kill lice and superlice through suffocation. This makes Nix Ultra a valuable alternative for families concerned about pesticide resistance or sensitivity. The key is to be aware of the difference between the various Nix products, ensuring you select the correct treatment for your needs and follow the instructions carefully for both the hair solution and any accompanying household sprays. For the safest and most effective results, always read the product's label and consult a healthcare provider if you have any concerns. For further information, consider visiting the manufacturer's website, NixLice.com.
