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Neurophysiological and Sleep-Related Effects of a Cosmetic Shampoo and Conditioner in Adults With Scalp Discomfort

NCT07680608 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 21

Last updated 2026-07-06

No results posted yet for this study

Summary

The goal of this clinical trial is to learn whether regular use of Nizoral® Daily Prevent shampoo and conditioner can improve scalp comfort, sleep experiences, mood, and overall well-being in adults who have scalp discomfort and difficulty sleeping. The main questions it aims to answer are:

1. Does using the shampoo and conditioner improve scalp comfort and reduce the impact of scalp discomfort on daily life?
2. Does using the shampoo and conditioner improve sleep experiences and how rested participants feel?
3. Does using the shampoo and conditioner affect mood and other measures of well-being?.

Participants completed a one-week period without hair products, followed by two weeks of using the study shampoo and conditioner at least three times per week. During the study, participants:

1. Attended weekly study visits.
2. Answered questions about their scalp comfort, sleep, and daily experiences.
3. Wore a wrist-based sleep tracking device throughout the study. Completed weekly questionnaires about sleep and scalp health.
4. Took part in non-invasive brain activity measurements during study visits.

Conditions

  • Dandruff

Interventions

OTHER

Cosmetic Shampoo and Conditioner Regimen

Participants used the study cosmetic shampoo together with the study cosmetic conditioner at least three times per week for two consecutive weeks, following a one-week washout period without hair products.

Sponsors & Collaborators

  • Thornton & Ross

    collaborator UNKNOWN

  • Zentrela Inc.

    lead INDUSTRY

Principal Investigators

  • Dan Bosnyak, PhD · McMaster University

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-11-07
Primary Completion
2026-02-07
Completion
2026-02-07

Countries

  • Canada

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07680608 on ClinicalTrials.gov