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Skin pigmentation in acne vulgaris patients A study on usefulness of vitamin C gel

Skin pigmentation in acne vulgaris patients A study on usefulness of vitamin C gel - A study on usefulness of vitamin C gel

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000032919
Enrollment
30
Registered
2018-06-10
Start date
2018-03-26
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acne valgaris patients

Interventions

After washing the test product twice a day, in the morning and before bedtime, apply the appropriate amount to the affected area (pigmentation site) every day for 12 weeks.

Sponsors

Meiwa Hospital, Medical Corporation
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients with pigmentation symptoms of acne vulgaris

Exclusion criteria

Exclusion criteria: 1)Patients with experience of skin symptoms such as contact dermatitis by the components and similar components of this research. 2)A patient with an inappropriate rash or other lesion in the affected area. 3)Patients with unstable symptoms of disease and complications that cause pigmentation. 4)Patients undergoing treatment for pigmentation or patients who have not been over one year since the end of treatment. 5)Pregnant, possibely pregnant, hope to be pregnant, or breastfeeding woman.

Design outcomes

Primary

MeasureTime frame
Improvement of post-inflammatory pigmentation(PIH):4 weeks after treatment starts, 8weeks, 12 weeks evaluation of improvement by 'investigator's global improvement rating' in each observation period

Countries

Japan

Contacts

Public ContactOgaki Yoshitaka

EBC&M LLC. Business Promotion Department

yoshitaka_ogaki@ebc-m.com03-6435-3833

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026