Kill lice and kill nits - two tasks that differ significantly in complexity, and it becomes clear usually only in practice. Like, and the drug is effective, and dead insects almost fall off the hair after it, but here are the nits as were, and remain in the hair. And in a week or two of them, young larvae of parasites hatch, and everything starts again ...
The matter is that adult individuals of lice and their larvae are quite vulnerable insects, dying from the effects of many insecticides. But nits are louse eggs well protected from negative environmental factors by a dense protective shell and therefore resistant to most pediculicidal drugs.
So, for example, many modern pediculicidal drugs that ensure the destruction of lice, affect their nervous system and lead to paralysis of the insect with a subsequent fatal outcome. Such a means can penetrate the body of lice through the respiratory tract (spiracles), and into the nervous system itself enter with a blood stream. In nits, the insecticide is not so easy to penetrate, and even dipping the nits into a solution of the same permethrin (a powerful modern insecticide) does not necessarily destroy it.
Therefore, in order to kill nits, one should choose for this purpose such means, which have an ovicidal effect, that is, they poison the louse eggs. Or you can destroy nits mechanically by combing them with a special comb - this, by the way, is not as laborious as it might seem at first glance.
On a note
Means that destroy nits, almost always destroy the adult lice themselves. This means that by correctly choosing a drug to fight parasites, you can kill nits and lice, as they say, with "one stroke". It is important only to carefully read the instructions for such drugs, since many of them have contraindications and if used improperly can be dangerous to humans.
How to kill nits with special medications
Perhaps, the most effective drugs for nits today are nitrates, which are based on organophosphorus compounds. Such substances include, for example, carbofos and chlorpyrifos. Incidentally, the well-known dichlorvos also belong here. It is important only in this case not to confuse it with modern Dichlorfos that have long had nothing to do with the "Soviet" insecticide of the same name (modern Dichlorfos of different brands use safer insecticides from the group pyrethroids).
These organophosphate insecticides are generally considered quite toxic to humans. In addition, they often cause various irritations in contact with the skin, and therefore against lice are usually no longer used.
However, carbofos in certain concentrations is still used to kill lice and nits in, for example, the following preparations:
- Aerosol for lice and nits Para-Plus - here carbofos is part of the preparation together with additional insecticides permetrin and piperonyl butoxide. All these three chemicals have a neuro-paralytic effect on lice, but only carbophos can penetrate through the nitric membrane directly into the body of the larva developing in it. Aerosol is applied to the hair along their entire length, as well as to the scalp, spreading their hair with their fingers. After this, the product should be allowed to stand for 10 minutes and rinse with running water.
- Shampoo Pedilin - based only on carbofos and somewhat more simple to apply than Para-Plus. Pedilin is applied to the hair, like any other shampoo, is aged for about 20 minutes and washed off. During this time the insecticide manages to kill not only lice, but also a significant part of nits.
It is interesting
The principle of action of carbofos (it is also called malathion) is that it blocks the work of the cholinesterase enzyme, which, in turn, is designed to block the excessive release of acetylcholine. The latter is a neurotransmitter that causes a contraction of muscles when exposed to nerve receptors.
Accordingly, when carbofos blocks cholinesterase, acetylcholine accumulates in the body in significant amounts and causes a reduction (spasm) of the muscles of the insect. Just a few minutes after getting carbofos into the body of a louse, the insect is completely paralyzed, after which it dies pretty quickly.
And Para-Plus aerosol, and Pedilin shampoo can not only destroy lice and nits, but also lead to the development of side effects. Immediate danger to the human nervous system, carbophos in the composition of these drugs is not, because it is quickly neutralized in the body (in insects such "neutralizing" substances are not produced).
However, both agents can cause allergies and irritations on the skin. For this reason, both Para-Plus and Pedilin are not recommended for the eradication of lice in children under 3 years of age, as well as in pregnant and lactating women.
We destroy lice and nits with folk remedies
To destroy lice and nits, you can also look at folk medicine. Some of them are good in that they are equally dangerous both for adult insects and for their eggs.
The disadvantage of many folk remedies for lice is their increased danger to humans, especially when used improperly. For example:
- Kerosene, vinegar and hydrogen peroxide can literally burn out lice and nits on the hair. But when using them, there is always a significant probability of getting a chemical burn, much more dangerous than the parasites themselves. Hydrogen peroxide, in addition, also discolours hair: it is almost impossible to kill lice on the head with its help without changing hair color. With regard to the use of kerosene - there are cases of its ignition on the head in children when working near the source of an open flame. No less deplorable are the results when little-parent parents incorrectly dilute the vinegar essence and treat the hair with such a solution in the child.
- Cranberry juice allows you to loosen the attachment of nits to your hair, but you can not completely kill them. Well shown is the combination of this remedy with combs for combing lice.
- Potemkin water is also toxic to nits, as for lice. Perhaps, it can be considered one of the best folk pediculicidal means: if you carefully watch that the drug does not hit your mouth or nose, it will not cause harm.
Means like essential oils and decoctions of various herbs against lice and, especially, against nits are mostly ineffective. Such substances discourage insects, but if parasites have nowhere to go from their heads, they will survive the treatment.
What if ... do not kill the nits?
There is also a very effective approach in which nits are generally ignored, and the effect is only on vulnerable adult lice and their larvae. This treatment is in good agreement with the development cycle of parasites:
- First, the destruction of lice with the most safe means, for example, based on Dimethicone (Nyuda spray or Paranit), is made - this substance is safe even if accidentally ingested. On the hair, only nits remain alive.
- After such treatment, a pause of 10-12 days is maintained, during which time all larvae are excreted from all the nits.
- Then a repeated procedure is carried out to remove the young generation of lice by the same means. Usually in this case it is possible to kill lice almost completely without the use of especially dangerous preparations.
The minus of this method is its duration, but in general this approach justifies itself.
Safe ways to kill lice
And, finally, you can kill nits and lice in an old fashion, mechanically removing them from your hair. If you use special pediculicidal ridges, this process can be greatly facilitated and accelerated: combs such as NitFree and AntiV comb out more than 90% of lice from hair.
Remove nits from hair can be, after loosening their attachment to the hair cranberry juice or LiceGuard shampoo, then comb out with a comb over the bath and wash off.
Also abroad today is actively promoted the method of thermal destruction of lice and nits with special hairdryers, but so far the Russian market has not yet presented equipment for the application of this method.
And, of course, the easiest and most affordable way to get rid of lice and nits is to destroy their habitat. To do this, simply shave the infected hair. If this approach is possible aesthetically and stylistically, it is more rational and easier to use it.
Getting rid of lice and nits at home for 1 procedure: