An interventional study of Inorganic sunscreen and Organic sunscreen in Sunscreen Persistence, sponsored by Shannaz Nadia Yusharyahya. Status unknown at 1 site in Indonesia. Open to participants aged 18 Years to 40 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-11-24.
Sponsored by Shannaz Nadia Yusharyahya · Not applicable, Interventional, and Treatment
Prolonged sunlight exposure in swimming athletes can cause various changes in the skin; among them is sunburn. The use of sunscreen can reduce sunburn effectively. However, various types of physical activity that can trigger sweating, friction, washing with water, or sun exposure after sunscreen use can interfere with its effectiveness in the form of a decreased SPF level. The purpose of this study is to determine and compare the persistence of organic and inorganic sun protection factor 30 (SPF 30) sunscreens after 1.5 hours of swimming.
Shannaz Nadia Yusharyahya is the lead sponsor of 2 studies on the registry; none are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Other: Organic sunscreen
Other: Inorganic sunscreen
Inorganic sunscreen will be applied evenly to 2 areas on the back of the subject with a 1 cc syringe and gloved finger in an amount of 2 mg / cm2. In the first session, one area will be irradiated 20 minutes after sunscreen application. In the second session, the other area will be irradiated after the subject has swam for 1.5 hours.
Organic sunscreen will be applied evenly to 2 areas on the back of the subject with a 1 cc syringe and gloved finger in an amount of 2 mg / cm2. In the first session, one area will be irradiated 20 minutes after sunscreen application. In the second session, the other area will be irradiated after the subject has swam for 1.5 hours.
SPF change after swimming for 1.5 hours
SPF of inorganic and organic sunscreen were calculated before and after swimming. The difference between SPF before and after swimming will be calculated and compared between the organic and inorganic group. SPF were calculated using minimal erythemal dose (MED) test. The test itself will be conducted in 2 days. Irradiation will be conducted on the first day and minimal erythemal dose result will be collected 24 hours after the irradiation.
Time frame: 24 hours
Inorganic sunscreen SPF
SPF resulted from in vivo method, conducted before swimming. SPF were calculated using MED test. The test itself will be conducted in 2 days. Irradiation will be conducted on the first day and MED result will be collected 24 hours after the irradiation.
Time frame: 24 hours
Organic sunscreen SPF
SPF resulted from in vivo method, conducted before swimming. SPF were calculated using minimal erythemal dose test. The test itself will be conducted in 2 days. Irradiation will be conducted on the first day and minimal erythemal dose result will be collected 24 hours after the irradiation.
Time frame: 24 hours
Plan to share: No
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This study is status unknown, as verified in Nov 2020. You cannot join it, but the record below documents what was studied.
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Shannaz Nadia Yusharyahya