KERTYOL PSO Rebalancing treatment shampoo

Soothes itchiness* - Promotes the elimination of plaques

A supportive treatment for plaque-prone scalps.

  • PSO skin prone to stubborn thick dry plaques PSO skin prone to stubborn thick dry plaques

CELASTROL : Patented** biotechnological process

Tested under dermatological control.


Usable by Teenagers - Adults

Suitable Hair - scalp

Type of hair All hair types - Psoriatic-prone scalp

Need Soothe itchiness - Anti-flake

Made in France

Environmental impact



Recyclable packaging (According to sorting instructions France which may vary locally)



Biodegradable formula**

**according to OECD 301B test



Made in a factory certified for the environment***

***according to ISO 14001 standard or ECOVADIS

Societal impact


Product made in France

By purchasing this product, you are helping to support our environmental and societal commitments :

Ducray supports patient associations that help people suffering from various types of inflammatory dermatitis

The shared goal of these partnerships is to help keep patients informed about their ...disorders in order to improve their quality of life, while at the same time pushing for clinical innovation to improve the treatments available for the disease.

The brand supports 14 associations worldwide, including: The Eczema Society and the Psoriasis Network in Canada, Atopy-Asthma Education Information Center in South Korea, the Portuguese Psoriasis Group, Psoriasis Liga Vlaanderen in Belgium, etc.

Clinical results:
Clinical results:

Our skincare is tested under dermatological control for effectiveness and tolerance.

Itching-77%itching from the first few applications¹
Thickness of the patches-78%thickness of patches after 1 month²
Improvement in quality of life+79%improvement in quality of life³

¹ ² ³Clinical study of 54 subjects with mild to moderate psoriasis on the scalp. 4-week attack phase: 3 shampoos per week. ¹Evaluation of the intensity of the itching by the subject at T8 days.
²Clinical evaluation of the thickness of the plaques at T29 days.
³Perceived evaluation of the improvement in quality of life at 29 days.


*Caused by skin dryness.
**Patent registered

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All about psoriasis-prone skin

Currently, there is no treatment that will cure the condition completely. However, the lesions can be treated and made to disappear. There is a wide variety of treatments available to dermatologists. The choice of treatment depends on the severity of the psoriasis, the impact on the patient's quality of life, any potential reasons of unsuitability, and the patient's medical history.


Everything you need to know about psoriasis

  • What is psoriasis?
  • What are the causes of psoriasis?
  • Psoriasis symptoms
  • Diagnosis: Do you have patches, dandruff, redness, or itching?
  • Areas affected by psoriasis
  • Psoriasis treatments
  • Living with psoriasis day to day
    I want to know more +


Proper use of my shampoo

Frequency of use

Different use in the treatment and maintenance phase

Treatment phase

Shampoo 3 times a week for 4 weeks

Maintenance phase

Shampoo once per week, alternating with the gentle shampoo

Application advice

Step 1

Step 1

Apply to damp hair and gently massage into scalp. Thoroughly rinse your scalp and hair

Step 2

Step 2

Reapply your shampoo and leave on for 2-3 minutes

Step 3

Step 3

After a few minutes of waiting, rinse thoroughly

Precautions for use

Precautions for use

Avoid contact with eyes and in case of contact, rinse thoroughly with water



Salicylic Acid (PSO)


Deeply exfoliating ingredient that promotes the disappearance of visible plaques and reduce the appearance of pimples .



1st innovative ingredient from Pierre Fabre biotechnology, Celastrol, is of 100% natural origin and produced through the cultivation of plant cells. This soothing ingredient directly targets the appearance of plaques and improve skin appearance.

Frequently asked questions

The answers from our experts

To see an improvement in the condition of the scalp, we recommend using KERTYOL PSO shampoo three times a week for four weeks from the appearance of plaques. Clinical results show a 77% reduction in itching¹ from the very first applications, and a 78% reduction in plaque thickness² after one month's use.

KERTYOL PSO rebalancing shampoo is recommended for adolescents and adults aged 12 and over. It soothes itchy scalps prone to psoriasis and helps eliminate dry plaques.

Yes, KERTYOL PSO rebalancing shampoo can be used in combination with other products for scalp psoriasis. However, it is important to consult a dermatologist to determine the appropriate treatment and potential interactions between products.

KERTYOL PSO shampoo is specifically formulated for psoriasis-prone hair and scalp. It is not intended for use on other parts of the body. To eliminate plaques on other areas, we recommend suitable products such as KERTYOL PSO Daily body balm or KERTYOL PSO Body and scalp concentrate.

Skincare routine


Skincare routine Rebalancing treatment shampoo
Concentrate local use
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