UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000059484
Receipt number R000068037
Scientific Title A study on the effects of essential oils on the hair and scalp of healthy women in their 40s
Date of disclosure of the study information 2026/04/30
Last modified on 2025/10/21 12:04:20

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Basic information

Public title

A study on the effects of essential oils on the hair and scalp of healthy women in their 40s

Acronym

A study on the effects of essential oils on the hair and scalp of healthy women in their 40s

Scientific Title

A study on the effects of essential oils on the hair and scalp of healthy women in their 40s

Scientific Title:Acronym

A study on the effects of essential oils on the hair and scalp of healthy women in their 40s

Region

Japan


Condition

Condition

healthy women in their 40s

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To examine the psychological and physiological effects of essential oils on the scalp and hair

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1

Exploratory

Trial characteristics_2


Developmental phase

Not applicable


Assessment

Primary outcomes

Water loss, single hair strength and hair diameter

Key secondary outcomes

Scalp: Oil content, Microscope observation
Hair: SEM
Psychological: VAS


Base

Study type

Interventional


Study design

Basic design

Single arm

Randomization

Non-randomized

Randomization unit


Blinding

Open -no one is blinded

Control

Uncontrolled

Stratification

NO

Dynamic allocation

NO

Institution consideration

Institution is not considered as adjustment factor.

Blocking

YES

Concealment

No need to know


Intervention

No. of arms

1

Purpose of intervention

Prevention

Type of intervention

Other

Interventions/Control_1

Essential oil

Interventions/Control_2


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

40 years-old <=

Age-upper limit

49 years-old >=

Gender

Female

Key inclusion criteria

-Healthy women in their 40s
-General subjects who have given informed consent to participate in this study
-Hair length of 15 cm or longer

Key exclusion criteria

- Have a scalp skin disorder
- Use steroid hormone medications or medicated cosmetics containing hair growth ingredients
- Have had head surgery
- Smoker
- Have had an allergic reaction to commercial fragrances or cosmetics
- Dislike the scent of rose, patchouli, or rosemary
- Pregnant or breastfeeding
- Have a perm or plan to have one during research
- Have bleached or dyed hair
- Alopecia
- Have menopausal symptoms
- Have malignant tumors, heart failure, liver damage, kidney damage, endocrine disorders, diabetes, nutritional disorders, alcoholism, or severe arrhythmia

Target sample size

20


Research contact person

Name of lead principal investigator

1st name Takeshi
Middle name
Last name Yamakawa

Organization

Japan Aroma Environment Association (Public Interest Incorporated Association)

Division name

Academic Research Division

Zip code

150-0001

Address

6-34-24 Jingumae, Shibuya-ku, Tokyo

TEL

03-6384-2861

Email

research@aromakankyo.or.jp


Public contact

Name of contact person

1st name Takeshi
Middle name
Last name Yamakawa

Organization

Japan Aroma Environment Association (Public Interest Incorporated Association)

Division name

Academic Research Division

Zip code

150-0001

Address

6-34-24 Jingumae, Shibuya-ku, Tokyo

TEL

03-6384-2861

Homepage URL


Email

research@aromakankyo.or.jp


Sponsor or person

Institute

Japan Aroma Environment Association (Public Interest Incorporated Association)

Institute

Department

Personal name

Takeshi Yamakawa


Funding Source

Organization

No

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization

JAPAN


Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

AEAJ Research Ethics Committee

Address

6-34-24 Jingumae, Shibuya-ku, Tokyo

Tel

03-6384-2861

Email

research@aromakankyo.or.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW

東京都


Institutions

Institutions

DRC株式会社大阪検査会場(大阪府)


Other administrative information

Date of disclosure of the study information

2026 Year 04 Month 30 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

2025 Year 10 Month 27 Day

Date of IRB


Anticipated trial start date

2025 Year 11 Month 16 Day

Last follow-up date

2026 Year 04 Month 06 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2025 Year 10 Month 21 Day

Last modified on

2025 Year 10 Month 21 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000068037