Hands and face exposure for vitamin D production

An experimental photodermatology study examining the impact of hands and face exposure on cutaneous vitamin D production

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN93416541

Enrollment

Registered

2015-12-10

Start date

2015-11-23

Completion date

Unknown

Last updated

2021-06-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Topic: Dermatology

Interventions

All participants undergo the intervention involving solar-simulated ultraviolet radiation. A dose of 1.3 SED (standard erythema dose) is given three times a week for 6 weeks. Blood samples are taken a

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Aged 20-60 years 2. Ambulant 3. Healthy 4. White Caucasian (sun-reactive skin type I-IV) 5. Willing and capable of participating to the extent and degree required by the protocol

Exclusion criteria

Exclusion criteria: 1. Sunbathing or sunbed use in the last 3 months 2. Taking photoactive medication or bone active therapies 3. Taking vitamin D, fish oil or calcium supplements 4. History of skin cancer or photosensitivity disorder 5. Pregnancy or lactation

Design outcomes

Primary

Measure	Time frame
Serum 25-hydroxyvitamin D (25(OH)D) concentration is measured using liquid chromatography tandem mass spectrophotometry (LC-MS/MS) at baseline and then weekly for up to 6 weeks.	—

Countries

United Kingdom

Contacts

Public ContactJoanne Osman

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026