Study on Carotenoid-Based Instrumental Index

Recruiting now

Conditions studied: Skin Carotenoid Status

In brief

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.

Key facts

Study ID

NCT07198503

Run by

ChinaNorm

People needed

600

Starts

2025-09-06

Expected to finish

2025-10-16

Last updated by the study team

2025-09-30

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

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

You may not qualify if…

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

Where it is running

• Shanghai China-norm Quality Technical Service Co., Ltd. — Shanghai, Shanghai Municipality, China (enrolling)

Full record on ClinicalTrials.gov

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