Study on Carotenoid-Based Instrumental Index

ChinaNorm

Status: Enrolling

Conditions: Skin Carotenoid Status

Study type: Observational

Funder types: Industry

Identifiers

NCT07198503

W25002001

Details and patient eligibility

About

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.

Enrollment: 600 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

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.

Trial design

600 participants in 2 patient groups

Chinese citizens aged 18-50

Description:

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

Chinese citizens aged ≥50

Description:

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