Hedrin Once Spray Gel
Hedrin Once Spray Gel

Hedrin Once Spray Gel

Hedrin Once Spray Gel

The Hedrin Once Spray Gel is an easy-to-apply spray that kills head lice and eggs. The active ingredient penetrol effectively kills the eggs while the gel smothers the lice. Skin friendly with no strong odous and suitable for ages 6 months and over. 

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MHRA Approved medication
Discreet and fast delivery


What is Hedrin Once Spray Gel?

Hedrin Once is a convenient and fast way to kill head lice and eggs without the use of a comb. Hedrin Once is a one-off treatment applied to dry hair and works in 15 minutes.

How does it work?

Hedrin Once is a non-insecticide product that contains the silicone oil dimethicone. Dimethicone kills head lice and eggs by coating them in a thick layer of oil which suffocates them. 

Is Hedrin Once Spray Gel suitable for me?

Hedrin One is a clinically-proven, pesticide-free head lice treatment that kills the lice and eggs, preventing reinfection. Suitable for use by adults and children 6 months and over. 

The product images shown may represent the range of products, or be for illustration purposes only and may not be an exact representation of the product.

Side Effects

All medications can cause potential side effects, below we have listed some potential side effects, however, these do not always occur.

If you experience side effects, discontinue use and consult with a doctor.

Disclaimer: This website does not constitute as medical advice, you should also consult with a doctor before taking medication. If you experience any major reactions to any medication you are taking, you must seek immediate medical attention.


Directions for Hedrin Once Spray Gel.

For adults and children aged 6 months and over:

  • Shake up before use
  • Apply straight onto dry hair
  • Work in with a comb or fingers, cover from root to tip
  • Leave for 15 minutes
  • Wash out with shampoo.

Disclaimer: This website does not provide medical advice. No information listed on this website is intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment before undergoing a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.


Next Day Delivery Guarantee

All orders placed before 14:00 on weekdays will be delivered the next working day. For the majority of the UK, medication will be dispatched by Royal Mail, Monday to Friday, if ordered before 14:00. Dispatches are sent using Royal Mail's Next-Day Tracked 24-Hour service. We will email you tracking information directly and you should receive your order the day after dispatch.

Our Discreet Packaging Promise

We know that many of our customers turn to us when they need personal medication, preferring to use our online service rather than shopping for the product face to face. That is why our delivery is always discreetly packaged in plain brown boxes or enveloped. You will not have to worry about any content descriptions, and the package will be for your eyes only!

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How to place an order
Checkout online

Add your item to the cart and checkout securely using our express checkout online.

Next day delivery

Once you have placed an order you should receive it the next working day if you placed the order before 14:00 or the day after if placed after 14:00.

Recieve your order

It is that straightforward, you will now recieve your order to the comfort of your home or delivery address.

What are the ingredients in Hedrin Once Spray Gel?

Why Welzo
Convenient and fast
Convenient and fast

Welzo over the counter products are shipped out for next day delivery if placed before 14:00.

UK Based Pharmacy
UK Based Pharmacy

We only work with UK based pharmacies. All of our pharmacy partners are registered with GPhC.

Rated 4.9/5 on Trustindex
Rated 4.9/5 on Trustindex

We are rated 4.9 out of 5 by over 23,000 customers online. Making us the highest rated online pharmacy in the UK.

Why Welzo