An observational study in Dandruff, sponsored by Vichy Laboratoires. Completed at 1 site in Mauritius. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-04.
Sponsored by Vichy Laboratoires · Observational
The goal of this study is to to evaluate and compare the efficacy of the routine "Shampoo + Conditioner " versus " Shampoo alone" immediately after application and after 1 week, 2 weeks, 3 weeks, 4 weeks (treatment phase) and 5 weeks, 8 weeks, 10 weeks and 12 weeks after applications stop (remanence phase) on subjects with moderate to severe dandruff.
Participants will:
Apply investigationnal products 3 time a week during 4 weeks and neutral or investigational products 3 time a week during 12 weeks Visit the center 9 times during the study for evaluations Keep a diary of their discomfort and the number of times they use the investigational products
Secondary objectives:
Vichy Laboratoires is the lead sponsor of 6 studies on the registry; 2 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients with moderate to severe dandruff in Quatre-Borne in Mauritius
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Shampoo + conditionner
Other: Selenium disulfide · Other: Piroctone olamine
Shampoo
Other: Selenium disulfide
1% SeS2
0.5% piroctone olamine
Dandruff evaluation (non adherent and adherent)
Total score of dandruff = score of adherent and non adherent dandruff, which are 2 scales from 0 to 5 "0 is equivalent to no dandruff and 5 indicates a very large quantity of dandruff.
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Self-evaluation by subject of discomfort sensation (stinging, itching, burning sensation) on structured scale;
Structured scale 0 to 9 (0 is equivalent to none, positive result and 9 indicates hugely, negative result)
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Self-evaluation by subject of dandruff state and greasy aspect on structured scale
Structured scale 0 to 9 (0 is equivalent to none, positive result and 9 indicates hugely, negative result)
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Quality of life questionnaire - Scalpdex
Publish questionnaire of quality of life, each item is evaluate with a 5-point scale from 0 (never, positive result) to 100 (always, negative result)
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Standardized pictures of the scalp
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Efficacy and cutaneaous acceptability
Questionnaire with 5 proposition for each question: completely agree, somewhat agree, neitheir agree or disagree, somewhat disagree, completely disagree
Time frame: Day 0, Day 3, Week 1, Week 2, Week 3, Week 4, Week 9, Week 12, Week 14, Week 16
Plan to share: No
No publications or documents are linked to this record.
Ran from Apr 2025 to primary completion in Aug 2025, 4 months.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
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Dandruff
Vichy Laboratoires