Oral Sialic Acid Product Beauty Efficacy Test

June 8, 2026 updated by: Wuhan CASOV Green Biotech Co., Ltd

Assessment and Comparison on 3 Groups of 25 Human Beings of the Effect on the Cutaneous State, the Dermis Echogenicity, the Moisturizing Effect, the Depigmenting Effect, the Effect on the Biomechanical Properties and the Effect on Wrinkles, Color and Homogeneity and Pigmentary Spots of Cosmetic Product N°1 vs Cosmetic Product N°2 vs Placebo After Oral Intake in Conditions of Normal Use During 28, 56 and 84 Days: Self-assessment of the Cosmetic Qualities and Efficacy

Evaluate and compare the effects on female facial skin of oral placebo (Product A), N-acetylneuraminic acid (Product B), and ACAI-PLUS (Product C) after 28, 56, and 84 days under normal usage conditions.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
83

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
    • Hubei
      • Wuhan, Hubei, China, 430071
        • COSderma China Laboratory (Wuhan, China）

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Chinese Asian women aged 40-65, with facial skin issues such as pigmentation spots, lack of elasticity, and wrinkles

Description

Inclusion Criteria:

  • Skin type origin: Asian in China
  • Age: from 40 to 65 years old
  • Gender: female

  • Specific criteria:

    • All skin type on the face Dry, dry combination, normal

    1. presenting with a lack of elasticity to the face, inclusion grade

      ≤ 6 according 10 points scale

    2. presenting with a lack of density to the face, inclusion grade ≤ 6 according 10 points scale
    3. presenting with wrinkles on crow's feet area, grade ≥ 2 according to Skin ageing atlas Vol.2 (p.41)
    4. presenting with pigmentary spots with at least one with diameter ≥ 3mm
  • Usual or occasional user of food supplements
  • Able to give her informed consent

Exclusion Criteria:

The non-inclusion general criteria were the following ones:

  • allergies or reactivity to cosmetic products,
  • for the subjects undergoing hormonal treatment; change of treatment within 3 months preceding the inclusion visit,
  • expectation of change in the current hormonal treatment during the study,
  • anti-allergic, antibiotic, anti-inflammatory, dermatological treatment or corticosteroid therapy within 2 weeks before the inclusion visit,
  • having a chronic pathology,
  • performing or prevision to perform another test during the study or during the exclusion period,
  • employee of the COSderma laboratory,
  • pregnant or breast-feeding woman,
  • woman not taking precaution to prevent pregnancy.

The non-inclusion specific criteria were the following ones:

  • application of care products to the face within 48 hours preceding the inclusion visit,
  • application of make-up products to the face the day of the inclusion visit,
  • face wash with any other means than clear water (no soap or cleanser) on the day of the inclusion visit,
  • application of self-tanning products to the face within 4 weeks preceding the inclusion visit,
  • Oral intake of food supplement within 1 month preceding the inclusion visit,
  • cutaneous marks on the face which could interfere with the skin's clinical signs assessment (pigmentation issues, scar tissues, over-developed hairiness, too many ephelides and naevi, sunburns...),
  • solar exposition (natural sun or UVA or heliotherapy treatment) within 4 weeks preceding the inclusion visit and expectation of solar exposition (natural or UVA) during the study,
  • Vitamin A acid treatment or its derivatives within 3 months preceding the pre-inclusion visit,
  • Retinoid based oral treatment within 6 months before the pre-inclusion visit, or local treatment within 2 months prior to this visit,
  • Carotene based treatment within 4 weeks preceding the inclusion visit,
  • expectation or having undergone aesthetic or dermatological surgery on the face.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Group A
placebo
Dietary supplement: Oral placebo
Oral placebo once daily for 84 consecutive days
Group B
N-acetylneuraminic acid
Dietary supplement: Oral N-acetylneuraminic acid
Oral N-acetylneuraminic acid, once daily, for 84 consecutive days
Group C
ACAI-PLUS
Dietary supplement: OralACAI-PLUS
Oral ACAI-PLUS, once a day, for 84 consecutive days

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Skin clinical scores
Time Frame: Day0、Day28、Day56、Day84
Dermatologists use a 10-point scale (0-9) and Volume 2 of the Atlas of Skin Aging for visual/tactile assessment. (includes elasticity, firmness, crow's feet, under-eye wrinkles, facial sagging, skin tone radiance, moisturization)
Day0、Day28、Day56、Day84

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Self-assessment by subjects
Time Frame: Day0、Day28、Day56、Day84
Subjects self-rated using a 10-point scale (0-9). (includes skin beauty, visibility of wrinkles, skin tone evenness, radiance, firmness)
Day0、Day28、Day56、Day84
Dermal echo parameters
Time Frame: Day0、Day28、Day56、Day84
Using Dermcup® high-frequency B-mode ultrasound scanning (25 MHz probe) to obtain dermal echo parameters
Day0、Day28、Day56、Day84
Color and clarity of spots
Time Frame: Day0、Day28、Day56、Day84
Dermatologists use Pantone color cards to score the color and clarity of spots
Day0、Day28、Day56、Day84
Wrinkles, skin tone uniformity, and spots
Time Frame: Day0、Day28、Day56、Day84
COSderma Photobench photography + Newtone software analysis to obtain information on wrinkles, skin tone uniformity, and spots
Day0、Day28、Day56、Day84
Stratum corneum moisture index
Time Frame: Day0、Day28、Day56、Day84
Corneometer® CM825 capacitance measurement method to obtain Stratum corneum moisture index
Day0、Day28、Day56、Day84
Biomechanical properties of the skin
Time Frame: Day0、Day28、Day56、Day84
DTM310 Diastron® torque meter obtains information on skin biomechanical properties
Day0、Day28、Day56、Day84
Freckle removal effect
Time Frame: Day0、Day28、Day56、Day84
Siascope V® spectrophotometric intradermal analysis obtains information on freckle removal effects
Day0、Day28、Day56、Day84
Self-assessment of cosmetic quality and efficacy
Time Frame: Day28、Day56、Day84
By distributing 12 questionnaires to the subjects, self-assessment information on the quality and effectiveness of cosmetics was obtained. A four-point Likert scale was used (Agree, Somewhat Agree, Somewhat Disagree, Disagree), and the questionnaire content included: 1. Skin feels better; 2. Skin becomes fairer; 3. Pigmentation on the skin lightens or decreases; 4. Skin becomes radiant; 5. Skin becomes more elastic; 6. Skin is firmer than before; 7. Skin wrinkles and fine lines improve; 8. Skin becomes moisturized/hydrated; 9. Skin's oil-water balance is better; 10. Skin looks rejuvenated, full of energy; 11. Sleep improves after consumption; 12. Memory improves after consumption.
Day28、Day56、Day84

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Wuhan CASOV Green Biotech Co., Ltd

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
COSderma China Laboratory (Wuhan, China）

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 25, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 22, 2023

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 22, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 2, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 8, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 10, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 10, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 8, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SECCR/2022-132-01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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