Selsun Shampoo is a medicated shampoo used to treat the scalp from dandruff and seborrhoeic dermatitis. It effectively reduces grease on the scalp.


6/23/2025 3:06:05 PM


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Selsun (Selenium Sulfide)

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  • Overview
  • Directions
  • Cautions

What is Selsun (Selenium Sulfide)

Selsun Dandruff Shampoo is a medicated shampoo used to treat the scalp from dandruff and seborrhoeic dermatitis. It is effective in reducing grease on the scalp and helps with slowing down the process of newly grown skin cells.

The skin on the scalp is more sensitive than any other part of our body and grows skin cells at a faster rate. It is made up of tissue layers that contain more hair follicles and sebaceous glands. Selsun Dandruff Shampoo 2.5% reduces the growth of the grown tissues and improves nourishment for the hair to grow at a healthier rate.

Using this anti-Dandruff Shampoo on a regular basis helps the tissues on the scalp stay longer and keep the skin cells more connective thus healthy. This product is safe for anyone over the age of 5. This Shampoo is considered a pharmaceutical medicine and is approved by the Medicines & Healthcare Products Regulatory Agency.

How does Selsun shampoo work?

Selsun dandruff shampoo contains an essential ingredient selenium sulphide 2.5%.

Selenium sulphide is a compound that has medical use to treat pityriasis versicolor, seborrheic dermatitis, and dandruff.

The function of the sulphide is to destroy a particular type of fungus called dermatophyte. Dermatophyte is the cause of the conditions mentioned above. It is prone to grow on the scalp to damage skin cells and cause hair infection. The Shampoo helps with the prevention of infections as it contains Selenium Sulphide, an antifungal medication.

Selsun dandruff shampoo 2.5% prevents fungus from growing on your scalp. It is essential to let this chemical sit onto the skin of the scalp for maximum effectiveness, which would take more than a minute. Selsun dandruff shampoo help preserve the skin cells on the scalp as well as the amount of natural oil produced on hair.

How long does Selsun take to work?

Pharmaceutical instructions recommend using the Shampoo twice a week for the first two weeks and then once a week for the consecutive two weeks.

For a noticeable difference, the Shampoo must be used at least two times a week as directed by physicians. Other brands of dandruff shampoo require the application for three to four days for up to eight weeks for medical treatment.

If rashes appear during the process of applying dandruff, it is advisable not to use the shampoo and caution to stop applying if dandruff does not improve in 2 – 4 weeks.

Name Jana Abelovska
Role Superintendent Pharmacist
GPhc Number 2220953

How to use Selsun?

  • Shake the shampoo bottle well before use.
  • Twist the cap off anti-clockwise.
  • Pour some shampoo on your palm and rub it on your head. Massage the scalp and scrub thoroughly.
  • Allow Selsun Dandruff Shampoo to sit for 2-3 minutes and rinse off gently.

Some customers have reported good result after leaving it for about 5 minutes. Ensure that your hair is completely saturated in Shampoo and that the foam has been gently massaged into the scalp.

Use Selsun Dandruff Shampoo twice a week for the first two weeks. Then, use the Shampoo only once a week for the next two weeks. After the first four weeks, regular use of Shampoo is only necessary as required to improve certain scalp conditions.

Warnings and cautions

Make sure to check ingredients before purchasing any medical products, including Selsun Dandruff Shampoo. Do not use this product if you are allergic or hypersensitive to the following ingredients:

  • Selenium Sulphide
  • Bentonite
  • Titanium dioxide
  • Citric acid
  • Sodium dihydrogen phosphate dehydrate
  • Glyceryl monoricinoleate
  • Sodium Chloride
  • Sodium Hydroxide.

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