UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000063232
Receipt number R000072373
Scientific Title An Exploratory Comparative Study of Scalp and Hair Changes Following Continuous Shampoo Use
Date of disclosure of the study information 2026/10/28
Last modified on 2026/10/09 15:30:21

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Basic information

Public title

An Exploratory Comparative Study of Scalp and Hair Changes Following Continuous Shampoo Use

Acronym

An Exploratory Comparative Study of Scalp and Hair Changes Following Continuous Shampoo Use

Scientific Title

An Exploratory Comparative Study of Scalp and Hair Changes Following Continuous Shampoo Use

Scientific Title:Acronym

An Exploratory Comparative Study of Scalp and Hair Changes Following Continuous Shampoo Use

Region

Japan


Condition

Condition

Not applicable

Classification by specialty

Not applicable Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To explore the effects of continuous use of two different shampoos on the scalp and hair.

Basic objectives2

Others

Basic objectives -Others

To compare and investigate how continuous use of two different shampoos affects the scalp and hair.

Trial characteristics_1


Trial characteristics_2


Developmental phase

Not applicable


Assessment

Primary outcomes

Percent change in scalp TEWL from baseline (Week 0) to Week 4

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is blinded

Control

Placebo

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

2

Purpose of intervention

Treatment

Type of intervention

Other

Interventions/Control_1

Use the test shampoo to wash the entire scalp and hair at least once daily for 4 weeks.

Interventions/Control_2

Use the control shampoo to wash the entire scalp and hair at least once daily for 4 weeks.

Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

20 years-old <=

Age-upper limit

59 years-old >=

Gender

Female

Key inclusion criteria

1. Women aged 20-59 years.
2. Women who wash their hair with shampoo at least 6 times per week.

Key exclusion criteria

1. Persons who develop skin redness following exposure to ethanol.
2. Persons with abnormal skin conditions at the study site, such as atopic dermatitis or seborrheic dermatitis.
3. Persons who have undergone chemical hair treatments (e.g., hair coloring, bleaching, or perming) within 2 weeks prior to the start of the study period.
4. Persons who are already participating in another study at the time of informed consent or who plan to participate in another study during the study period.
5. Persons deemed unsuitable for participation in the study by the principal investigator due to noncompliance with study requirements or for other reasons.

Target sample size

24


Research contact person

Name of lead principal investigator

1st name Katsuyuki
Middle name
Last name Yuki

Organization

Kao Corporation

Division name

Hair Beauty Research Lab.

Zip code

131-8501

Address

2-1-3, Bunka, Sumida-ku, Tokyo, 131-8501, JAPAN

TEL

+81-3-5630-9395

Email

yuki.katsuyuki@kao.com


Public contact

Name of contact person

1st name Tamaki
Middle name
Last name Hirano

Organization

Kao Corporation

Division name

Hair Beauty Research Lab.

Zip code

131-8501

Address

2-1-3, Bunka, Sumida-ku, Tokyo, 131-8501, JAPAN

TEL

+81-3-5630-9395

Homepage URL


Email

hirano.tamaki@kao.com


Sponsor or person

Institute

Kao Corporation

Institute

Department

Personal name



Funding Source

Organization

Kao Corporation

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Human Research Ethics Committee, Kao Corporation

Address

2-1-3 Bunka, Sumida-ku, Tokyo 131-8501, JAPAN

Tel

+81-70-3300-8553

Email

watanabe.takuya@kao.com


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2026 Year 10 Month 28 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2026 Year 10 Month 05 Day

Date of IRB

2026 Year 10 Month 05 Day

Anticipated trial start date

2026 Year 10 Month 28 Day

Last follow-up date

2027 Year 09 Month 30 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2026 Year 10 Month 09 Day

Last modified on

2026 Year 10 Month 09 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000072373