How to use Hedrin

Applying Hedrin is Simple

Hedrin is a two-dose treatment. In order to eradicate head lice a second dose of Hedrin should be applied 7 days after the first to deal with any eggs which may have hatched.

If re-infestation does occur, Hedrin may be used again immediately.

Dead lice can be washed or brushed out easily after treatment and any nits (empty egg cases) can be removed with the fingers or fine toothed comb.

Application Instructions

  • Hedrin should be applied to dry hair.
  • The hair should be fully covered with Hedrin from roots to tip. 
  • It should be left to dry for 8 hours or overnight.
  • A second treatment after 7 days effectively deals with hatched eggs.

The active ingredient (Dimeticone) is carried in Cyclomethicone (a silicone commonly used in hair conditioners) which evaporates, leaving the Dimeticone coating the louse.

Because the hair dries off, it is not at all unpleasant to leave the lotion on. Hedrin is then easily washed out.

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.


Available for purchase at Pharmacies only. For your closest stockist please visit the LINKS page.


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