Sun Protection Factor (SPF) / UVA Protection Factor Study

Study Overview
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Brief Summary
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Evaluation of the effectiveness of sunscreen products by determining its Sun Protection Factor (SPF) against UV-B and UV-A

Detailed Description
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Sunscreen is intended to protect the skin from sun burn but since the amount of protection needed varies among individuals, sunscreen manufactures offer consumers difference levels of protection. These different levels of protection are expressed as a numerical value called the sun protection factor or SPF. The SPF is the ratio between the minimal erythema dose (MED) of sunscreen product of the protected skin and the MED of the unprotected skin. The minimal erythema dose in human skin is defined as the lowest ultraviolet B (UV-B) dose produces the first perceptible unambigous erythema with defined border appearing over most of the field of UVB exposure 16 - 24 hours after UVB exposure. The UVA protection factor is the ratio between the Minimal Persistent Pigmentation Darkening Dose (MPPDD) of sunscreen product of the protected skin and the MPPDD of the unprotected skin. The threshold response will be taken as an unequivocal pigment darkening with distinct border which persisted for at least 2 hours. The test products are Day Gel-0120-C and Day Gel-0120-D with active ingredients ethylhexyl methoxycinnamate, Diethylamino hydroxybenzoyl hexyl benzoate

Official Title
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The Efficacy of Sun Protection Factor (SPF) Against UV-B and UV-A of Cosmetic Products

Conditions
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Sunscreen Agents

Intervention / Treatment
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* Other: Day Gel-0120
* Other: P5 Reference Standard (SPF 35 reference)


Participation Criteria
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Eligibility Criteria
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Inclusion criteria: Healthy male or female, 18-60 years of age Fair skin with skin type II-IV of Fitzpatrick's skin type Able to understand and comply to the investigators instruction. Able to read, understand and sign up informed consent form. Exclusion criteria: Subject with a history of abnormal response to sunlight or those taking medication which might produce an abnormal response to sunlight Subject exhibiting current sun burn, sun tan, uneven skin tone, or visible skin disease which might be confused with a reaction from the test material or which might interfere with evaluation of test results Individuals who are under doctor's care Female subjects who indicate that they are pregnant or nursing Individuals with known hypersensitivity to any sunscreen products Individuals accustomed to using tanning beds

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Prevention
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: SPF evaluation<br>Healthy male or female subjects with Fitzpatrick Skin Type of II-IV were included in the SPF study | Other: Day Gel-0120<br>* Two milligrams of test article applied to the test area. The test products are Day Gel-0120C and Day Gel-0120-D. The products are applied together on the test area with<br>Other: P5 Reference Standard (SPF 35 reference)<br>* The reference product is P5 according to ISO 24444:2019. The application of reference product is similar with test product.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To measure the SPF Value of the teat product | The mean of SPF value from all the subject | 2-24 hours post exposure | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Sun Protection Factor, Sunscreen