Medicines & Supplements A to Z > Pristine


Last updated on 19/10/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Ketoconazole


DRUG CLASS: Antifungals

SUB CLASS: Imidazoles

USED FOR: Seborrhoeic dermatitis, Dandruff

– 2% (shampoo)

What is Pristine for?

Pristine is a brand product that contains Ketoconazole, which is a type of imidazole antifungals. It is used to treat dandruff and seborrhoeic dermatitis, which is a skin condition caused by excessive oil secretion.

How to use it?

Pristine is only available as shampoo. Wet your hair and scalp thoroughly with water. Apply sufficient shampoo to produce enough lather to wash the scalp and hair, gently massage it over the entire scalp and leave for 3-5 minutes before rinsing thoroughly.

For treatment of seborrhoeic dermatitis and dandruff, apply twice weekly for 2-4 weeks. If it is used as prophylaxis of seborrhoea and dandruff, apply once every 1-2 weeks.

What are the side effects of Pristine?

Common side effects of Pristine include skin irritation and itchiness.

Who should not take Pristine?

People who are allergic to Ketoconazole or any component of the formulation.

Pharmacist Tips:

– Do not apply on broken or inflamed skin including scalp.
– Avoid contact with eyes. If it occurs, rinse thoroughly with water.

Common dosing schedule:
Pristine should be applied twice daily for 2-4 weeks.

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Pristine may interact with:
No known significant interactions.

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Pristine in Hong Kong?

In Hong Kong, Pristine is pharmacy only medicine and can be purchased without a prescription in a registered pharmacy under the supervision of a pharmacist. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Pristine in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.