Study on Carotenoid-Based Instrumental Index

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

600 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-09-06

Study Completion Date

2025-10-16

Brief Summary

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Nu Skin (China) Daily-Use\&Health Products Co.,Ltd. has developed biophotonic scanners based on Raman spectroscopy, which measures skin carotenoid levels through hand skin scanning. In this study, the new Prysm device, which adopts new technology in a lower cost and more portable form, was used to measure skin carotenoid levels in a population, and the relationships between these levels and dietary habits and lifestyle factors were analyzed. The collected data included basic demographic information such as age, gender, smoking status, use of health products or nutritional supplements, and exercise habits, as well as physiological indicators such as BMI and body fat percentage. Subjective assessments were also obtained, including questionnaires on diet, skin condition, physical health, lifestyle, psychological status, and memory performance, alongside skin image analyses capturing parameters such as ITA°, L\*, a\*, b\*, glossiness, erythema, and pigmentation.

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Detailed Description

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Conditions

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Skin Carotenoid Status

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Chinese citizens aged 18-50

The study sample was selected to be as evenly distributed as possible in terms of age and gender.

No interventions assigned to this group

Chinese citizens aged ≥50

The study sample was selected to be as evenly distributed as possible in terms of age and gender.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

1. Chinese individuals of Asian ethnicity aged 18 years or older.
2. Basic proficiency in reading and writing Chinese, sufficient to independently complete questionnaires.
3. Voluntary participation with signed informed consent.
4. Willingness to comply with all assessment requirements.

Exclusion Criteria

1. Presence of open facial lesions, prominent scars, or visible acne marks.
2. Currently planning pregnancy, pregnant, or breastfeeding.
3. Ongoing treatment for acute or severe medical conditions.
4. Significant impairments affecting cognitive or behavioral abilities.
5. Other medical reasons identified by experts or professionals that may interfere with the assessment results.

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes