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Development and Exploration of a Concept to Increase Topical Sunscreen Use in Outdoor Workers

Development and Exploration of a Concept to Increase Topical Sunscreen Use in Outdoor Workers - ProtExSun

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00035178
Enrollment
234
Registered
2024-10-10
Start date
2025-04-01
Completion date
Unknown
Last updated
2025-11-24

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

Conditions

Occupational disease no. 5103 "Squamous cell carcinoma or multiple actinic keratoses caused by natural UV radiation"

Interventions

Group 1: Intervention group: Provision of different topical sunscreens and a health educational measure (sunscreens for the entire study period + health educational measure 10 minutes at the beginnin

Sponsors

Universität Osnabrück
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Intensively exposed to solar UV radiation of regularly one hour or more per day, as defined in the occupational health rule no. 13.3 from the Federal Institute of Occupational Safety and Health (AMR 13.3).

Exclusion criteria

Exclusion criteria: Outdoor workers with a known or rather self-reported allergy to any of the ingredients of the study products. Skin diseases that could influence the study results (e.g., psoriasis vulgaris).

Design outcomes

Primary

MeasureTime frame
Increasing the frequency of the occupational as well as the personal and private use of topical sunscreens using a questionnaire modified according to Symanzik et al. for sun protection behaviour at baseline, after 3 months and after 6 months. In addition, internal UV-dose and immune response will be used determined by the levels of cis-urocanic acid (cUCA), interleukin-1 alpha (= IL-1a) and interleukin-1 receptor antagonist (= IL-1 RA) from collected Stratum corneum samples at the beginning of the study and after 3 months.

Secondary

MeasureTime frame
Increase in sun protection behaviour, especially with regards to the use of topical sunscreens using a questionnaire modified according to Symanzik et al. for sun protection behaviour and the OccuSun Safe questionnaire extended by questions on the private and personal sun protection behaviour at baseline, after 3 months and after 6 months. In addition, internal UV-dose and immune response will be used determined by the levels of cis-urocanic acid (cUCA), interleukin-1 alpha (= IL-1a) and interleukin-1 receptor antagonist (= IL-1 RA) from collected Stratum corneum (= SC) samples at the beginning of the study and after 3 months. Increase in knowledge about sun protection and skin cancer using the Skin Cancer and Sun Knowledge (SCSK) scale at baseline, after 3 months and after 6 months. Evaluation of the user acceptance of the provided sunscreens using a user acceptance questionnaire according to Symanzik et al. which was adapted to sunscreen use at the end of the study (after 6 months). Biomarkers of internal UV-dose and immune response in SC samples.

Countries

Germany

Contacts

Public ContactSwen Malte John

Universität Osnabrück

johnderm@uni-osnabrueck.de+49 541 9692357

Outcome results

None listed

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