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RECRUITINGNA

Efficacy Evaluation Study of Vitamin C and Glutathione Liquid Sachet

NCT07379216•TCI Co., Ltd.

Summary

The objective of this study is to evaluate the effect of liquid vitamin C and glutathione supplements on human skin condition improvement and anti-oxidation.

Detailed Description

This study is a single-center, placebo-controlled, double-blinded, parallel human trial designed to evaluate the skin beauty and anti-oxidant effect of liquid vitamin C and glutathione supplements. Healthy adult participants aged 18-65 years will be enrolled. Participants will be informed to consume test samples daily for 12 consecutive weeks. Skin measurement and self-assessment questionnaires will be conducted at baseline (before intake), after 4, 8 weeks, and 12 weeks of consumption. Fasting blood samples will be collected at baseline and after 12 weeks of consumption.

Eligibility

Age

18 - 65 years

Sex

ALL

Healthy Volunteers

Yes

Inclusion Criteria

•Healthy male or female adults, aged 18-65 years old;
•Commitment not to use products having activity comparable with that of the product to be tested during the study period;
•Free of any dermatological or systemic disorder that would interfere with results.

Exclusion Criteria

•Subject with obvious skin surface damage;
•Subject who had oral or topical medication which may affect skin condition within 1 month;
•Individuals with known allergies to cosmetics, medications, or foods (especially those allergic to legumes/soy);
•Pregnant or breastfeeding individuals;
•Received facial laser therapy, chemical peeling in the past 2 months.
•Individuals unwilling to allow publication or public disclosure of photographs taken as part of the study results

Locations (1)

Chia Nan University of Pharmacy & Science

Pingtung City, Taiwan

Key Dates

Start Date

January 24, 2026

Primary Completion Date

May 18, 2026

Completion Date

June 1, 2026

Last Updated

February 4, 2026

Enrollment

ESTIMATED participants

Conditions

Skin ConditionAnti-Oxidative Stress

Interventions

Placebo sachet

DIETARY_SUPPLEMENT

Vitamin C and Glutathione Liquid Sachet

DIETARY_SUPPLEMENT

Contacts

Chia-Hua Liang, Ph.D.

CONTACT

+886-06-2664911 tinna_ling@mail.cnu.edu.tw

Ping Lin

CONTACT

+886-02-87977811 candice.lin@tci-bio.com

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: February 4, 2026Data synced to Clareo: March 29, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

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Efficacy Evaluation Study of Vitamin C and Glutathione Liquid Sachet

Inclusion Criteria

Exclusion Criteria

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