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The efficacy and safety of a medical device sunscreen for the prevention and reduction of skin damage caused by excessive sun exposure

A double-blind, randomised and placebo-controlled clinical trial of the safety and efficacy of 3SKIN Sunscreen (SPF50+ with 5-ALA and Vit D3) to reduce the severity and prevent the progression of actinic keratosis in patients with sun-damaged skin, and in healthy subjects

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN90748112
Enrollment
80
Registered
2024-09-16
Start date
2024-08-11
Completion date
Unknown
Last updated
2026-06-01

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

Conditions

Prevention and reduction of actinic keratosis in patients with epidermal skin damage and increase in skin quality Skin and Connective Tissue Diseases

Interventions

The patient is given a randomised number by Viedoc. After all assessments have been done, the patient is given instructions on how to use the device and will leave with the corresponding device as to

Sponsors

3SKIN AS
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: Patients: 1. Clinical (visual inspection and palpation) diagnosis of sun-damaged skin of the face with clinically typical, visible, and distinct facial AK lesion(s); Olsen global lesion scale grade 1-2 2. In the judgement of the Investigator are in good general health based on medical history 3. Both genders; males and females 4. Aged 18-75 years Healthy volunteers: 1. Both genders; males and females 2. Aged 18-75 years

Exclusion criteria

Exclusion criteria: 1. Current, active skin cancer on the face; melanoma or non-melanoma (e.g. basal cell carcinoma (BCC), squamous cell carcinoma (SCC), Bowen’s disease) 2. History of photosensitivity 3. Known hypersensitivity or allergy to any of the substances under study 4. Porphyria 5. Use of any photosensitising drugs 6. Immunocompromised or immunosuppressed subjects for any idiopathic, disease-specific or therapeutic reasons 7. Use of any systemic or topical immunosuppressive treatment (e.g. corticosteroids, systemic retinoids, chemotherapy) 8. Any topical treatment of sun-damaged skin or AK on the face (incl. medication, cryotherapy, curettage, photodynamic therapy, UV therapy, excision surgery, chemical peeling (e.g. retinol or other acids) in the 28 days prior to randomisation 9. Open wounds on the face 10. Concurrent use of any vitamin D3 supplement during the trial 11. Participation in any trial with an investigational device or drug in the last 28 days (or 5x half-life of an investigational medicinal product; whichever is the longest) prior to randomisation 12. Known pregnancy or nursing mothers 13. Any clinically unstable medical conditions (e.g. recent diagnosis of a concomitant disease), at the discretion of the Investigator 14. Expected poor protocol compliance or any mental or psychiatric co-morbidities that may interfere with the study procedures or assessments in the opinion of the Investigator 15. Prior participation in this study

Design outcomes

Primary

MeasureTime frame
All measured at the start and end of the study/Visit 1 and Visit 2: 1. Actinic keratosis (AK) severity clinically assessed, as per Olsen grading system: 0-3, at baseline and after 3 months +-2 weeks 2. AK severity measured using the modified actinic keratosis and severity index (mAKASI) score (0-10.8) at baseline and after 3 months +-2 weeks 3. Total (AK) lesion count (TLC) clinically measured at baseline and after 3 months +-2 weeks 4. Dermatoscopic grade of AK, as per Zalaudek (2014), measured at baseline and after 3 months +-2 weeks

Secondary

MeasureTime frame
Efficacy measurements: 1. Intensity, low echogenic band and skin thickness measured using Dermalab Combo by Cortex ultrasound device at baseline and after 3 months +-2 weeks 2. Elasticity of the skin, retraction time, viscoelasticity and Youngs Modulus measured using Dermalab Combo by Cortex cutometer at baseline and after 3 months +-2 weeks 3. Cosmetic outcome assessed by Investigator using the Fitzpatrick wrinkle scale (FWS) at baseline and after 3 months +-2 weeks 4. Quality of life in relation to the patient's skin measured using the Dermatology Life Quality Index (DLQI) questionnaire at baseline and after 3 months +-2 weeks 5. Cosmetic outcome reported by subject using questionnaire after 3 months +-2 weeks 6. Overall treatment satisfaction reported by the subject after 3 months +-2 weeks Safety measurements: 7. Adverse events (including adverse events of special interest, such as pain, burning, stinging, prickling sensations, erythema, itching) recorded by the patient during the study (3 months +-2 weeks) 8. Local skin reaction score (assessed by the investigator) - components: erythema, flaking/scaling, crusting, swelling, vesiculation/pustulation, erosions (ulcerations) grades: 0 = absent, 1 = mild, 2 = moderate, 3 = severe - measured at baseline and after 3 months +-2 weeks 9. Tolerability reported by subject using a verbal rating scale (VRS), categories 0-10 for pain, burning, stinging, prickling sensations, erythema and itching - recorded during the study (3 months +-2 weeks)

Countries

Norway

Contacts

Public ContactOscar Solér
oscar@3skin.no+47 (0)47370343

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 11, 2026