Hedrin FAQs

What's special about Hedrin?

Hedrin lotion kills head lice by preventing them from functioning and disrupting their water elimination process.

Is Hedrin suitable to use on the whole family?

Because silicones are not absorbed through the skin, Hedrin 4% Dimeticone lotion and spray are suitable for use on children as young as 6 months.

Can Hedrin be used on coloured or bleached hair?

Yes. Dimeticone (the active ingredient) and Cyclomethicone (the carrier in Hedrin 4% lotion) are used in a lot of shampoos and conditioners, so Hedrin can be used on coloured or bleached hair. However it is not advisable to use Hedrin directly before colouring or bleaching because it may prevent the colour taking to the hair.

Does Hedrin have a nasty odour?

No. Hedrin 4% lotion is a completely odourless, colourless silky lotion which spreads easily, making it simple to apply.

Does Hedrin sting?

No again. It is kind to the hair and skin and feels a bit like a cosmetic hair conditioner when it is applied.

What about lice eggs?

In order to ensure that the lice are effectively eradicated, a second dose of Hedrin lotion should be applied 7 days after the first treatment to deal with any eggs which may have hatched since the first application. The 'nits' (empty egg cases) are glued to the hair but are completely harmless.

They can be removed with the fingers or even a fine toothed comb.

Do I have to comb the lice out?

Once the lice are killed they should wash out of the hair - there is no need for a laborious combing regime.

The empty egg cases or nits are glued to the hair shaft and can be removed with the fingers or a fine toothed comb if desired.

How often can I repeat the treatment?

Two applications of Hedrin one week apart are necessary for the head lice infestation to be effectively dealt with. If reinfestation occurs within a short period then Hedrin may be used again straight away.

How much will I need?

A little Hedrin goes a long way. The amount needed depends entirely upon the length of hair to be treated. A 50ml bottle should be sufficient for a two-dose treatment of short hair. Longer hair or multiple treatments will require a larger bottle.

Where can I buy Hedrin?

Hedrin 4% Lotion — 50ml and 150ml and Hedrin 120ml (spray) — is available through pharmacies. To find a stockist near you please visit the LINKS page.



Always read the label. Use only as directed. If symptoms persist consult a healthcare professional.