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Selsun Dandruff Treatment - 100ml

Based on 14 reviews
SAVE 10%
RRP £3.89
Out of stock
SAVE 10%
RRP £3.89
Laura Henderson - Medical Content Writer
Laura Henderson
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
How we ensure accuracy in our content

What is Selsun Dandruff Treatment?

Selsun Dandruff Treatment is a shampoo designed to treat dandruff and seborrhoeic dermatitis. If you’re tired of finding flaky skin in your hair or dusting your shoulders, this treatment can help to reduce itching and irritation in your scalp and get rid of that dry, flaky skin. Use Selsun shampoo just twice a week while washing your hair as usual to begin your treatment and soothe your irritated scalp.

What is dandruff?

Dandruff is the name given to flakes of skin which fall from your scalp onto your hair and shoulders, which can be noticeable and even a little embarrassing. Dandruff happens when the skin of your scalp is dry and irritated, causing an itching sensation that can make the flaky skin even worse if you scratch it. Dandruff usually isn’t anything to worry about and it can be cleared up with the right shampoo, but it can be annoying, especially if your scalp is itchy and irritated.

What is seborrhoeic dermatitis?

Seborrhoeic dermatitis is a skin condition that commonly affects your scalp, causing dandruff. When you have seborrhoeic dermatitis, you can experience flare ups of the condition which make your scalp red, itchy, and scaly. Flare ups can be caused by stress, tiredness, cold weather, or even just because you’re feeling a little bit unwell, leading to an inflammatory reaction that gives you an itchy, irritated scalp and dry flakes of skin in your hair. Babies can often experience seborrhoeic dermatitis, and many parents know it as cradle cap.

How will Selsun shampoo treat my dandruff?

Selsun shampoo contains an active ingredient called selenium sulphide, which helps to reduce dandruff. It works by slowing down the growth rate of the skin cells in your scalp, specifically, the layer which produces dandruff. By slowing down this growth, this shampoo reduces the amount of flaky skin that will fall onto your hair and shoulders and the itchiness that this flaking causes. It also helps to reduce greasiness in your scalp, helping your hair to look healthy and clean.

Can I use this product if I’m pregnant or breastfeeding?

Selsun shampoo is not suitable for use during pregnancy or while you’re breastfeeding. If you’re suffering with dandruff or seborrhoeic dermatitis during these times, you should speak to your doctor or pharmacist and ask them to recommend a more suitable treatment for you.

How to use Selsun shampoo

Before using this product, shake the bottle well. Wet your hair and then massage a small amount of Selsun shampoo into the hair, forming a lather. Leave the shampoo on the hair for 2 - 3 minutes and then rinse off thoroughly. When using this treatment for the first time, use the shampoo twice a week for the first 2 weeks and then once a week for the next 2 weeks. After this first course of treatment, use the shampoo when you need to to keep your dandruff under control.

When should this product not be used?

Selsun shampoo is not suitable for use in children under the age of 5. Do not use this product if you are allergic to selenium sulphide or any of the other listed ingredients. Do not use this treatment if the skin on your scalp is severely broken or inflamed. For use on the hair and scalp only, avoid contact with eyes. Do not ingest or eat this product. Do not leave the shampoo in contact with your skin or hair for longer than recommended, as it can cause irritation, blistering, or a burning sensation in your scalp. Remove any gold, silver, or metallic jewellery before using this product as this product can cause discolouration. You should also remove any other jewellery or hair grips, just in case. Rinse this treatment from your hair thoroughly before dying, tinting, perming, or chemically straightening your hair, do not use this product for 2 days before or after doing any of these hair treatments. 

Does Selsun shampoo have any side effects?

Like all medications, Selsun shampoo can have side effects, although not everyone will experience them. These include:

  • Skin rash, hives

  • Irritation or sensitivity of the skin or scalp which may feel like a burning sensation

  • More normal hair loss than usual

  • Discolouration of the hair, which can be avoided by thoroughly washing your hair after treatment

  • Oily or dry hair or scalp

  • Blistering, especially if the shampoo is kept in contact with your hair or skin for longer than recommended

If you experience these or any other side effects while using this product, stop use and speak to your doctor or pharmacist. For more information about reporting the side effects of medication, please see the MHRA’s Yellow Card Scheme.

How to store this product

Store in a cool, dry place which is below 25 degrees C. Do not use this product if the expiry date printed on the original packaging has passed. Keep out of sight and reach of children.

Important Information

This product is a medicine; make sure to speak to your doctor or Chemist 4 U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.


Helpful Advice on Medication Restrictions & Addiction

For further information on our medication restrictions policy, please click here.

If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:


  • Each 100ml of shampoo contains 2.5 g of the active ingredient Selenium Sulphide (selenium disulphide Ph. Eur).

    The other ingredients are bentonite, titanium dioxide, citric acid, sodium dihydrogen phosphate dihydrate, glyceryl monoricinoleate S, monoethanolamine lauryl sulphate, Empigen BB, perfume, sodium chloride, sodium hydroxide, purified water.

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Shipping Times

MethodHandling TimeTransit TimeTimescaleApprox Cost
Standard Shipping (3-5 Working Days)n/an/an/a£0.00
Royal Mail Tracked 24n/an/an/a£4.95
Next Day Guaranteed (1 Working Day)n/an/an/a£6.95
Sons Tracked 24n/an/an/a£3.90
Sons Tracked 48n/an/an/a£2.90

Times are given in working days and are approximate. Costs may change based on order total, day of the week or location within the UK. Ability to hit timescales will depend on whether the products are ordered before a cut off time, as well as additional administration time incurred in reviewing your order.

Please review the estimates at the checkout.

Shipping Costs

Free UK Delivery on all orders over £30* - Delivery within 3-5 working days.

Standard UK Delivery - £2.95* - Delivery within 3-5 working days.

Express UK Delivery - £4.95** - Delivery within 1-2 working days.

Temperature Controlled Delivery - £8.85 - Delivery within 1-3 working days.

Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.

*Excluding refrigerated products and treatments which are subject to different postage charges.


Discreet Delivery

All our items are sent completely discreet for your peace of mind.

This means the packaging is plain, there is no mention of what product is inside your package and there is no mention of Chemist4U either.

We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

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Find similar products

Selsun Dandruff Treatment - 100ml Reviews

Athar Ali ,
Excellent Customer service
suresh balasubramanian,
This is an excellent product for dandruff. It is diluted and hence doesn't affect your eyes that much during bath. It has a slight perfume added to take away the sulphur odour. Highly recommend for people who use normal dandruff shampoo. Guarantee you can see the difference.
Steve ,
Ive been fighting seborrhoeic dermatitis for years unsucessfully. I've had 3 different treatments from my GP , I've tried head and shoulders pro, T gel, nizoral, plantur caffeine etc and many others. The Selsun has only been used 3 times and has already cleared most of the crusts have disappeared and the itching has subsided substantially. It really works and fingers crossed for a complete cure.
James Shaw,
Really good product for facial skin condition, used for years and the only thing that really works

Advice & Guides

Why do I have dandruff?

Why do I have dandruff?

What causes dandruff and how to get rid of it   Spotted little white or grey flecks in your hair or on your shoulders?   Congratulations, it sounds like you have dandruff! Dandruff is a harmless but annoying condition, but luckily for you, it’s also really simple to manage.  ...

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