A Phase 4 interventional study of Tanning spray and UVB in Vitamin D Status, sponsored by Creighton University. Completed at 1 site in United States. Open to participants aged 19 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2009-12-01.
Sponsored by Creighton University · Phase 4, Interventional, and Treatment
Patients need vitamin D which is normally produced in the skin in response to ultraviolet light from the sun. Vitamin D is important for calcium absorption and good bone health. Physicians have been using sunscreens to protect patients from skin cancer and the aging effects of sunlight for a least a half a century. Dermatologists have promoted sunscreen use to restrict sunlight exposure especially in white Caucasians. If this behavior is done 100% of the time when outdoors individuals may suffer from vitamin D deficiency. It is impossible to influence persons' behavior to wear sunscreens all the time when outdoors. With the use of sunless tanning agent (DHA), once a week, we can obtain a continuous sunscreen in the top layer of the skin that will not wash off, can't be removed with soap and water, or removed by perspiration. Under these circumstances we can answer the scientific question, will sunscreen use inhibit the production of vitamin D in the skin?
Creighton University is the lead sponsor of 126 studies on the registry; 4 are open to participants now.
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Exclusion Criteria:
To characterize the 25(OH)D response to 4 weeks of thrice weekly 40 mJ of UV-B light in a group of normal subjects with skin types I and II while using multiple applications of 3% DHA for five weeks.
Other: Tanning spray
To characterize the 25(OH)D response to 4 weeks of thrice weekly 40 mJ of UV-B light in a control group of normal subjects with skin types I and II who are not using 3% DHA applications.
Other: UVB
using 3% DHA twice a week for the 1st week and then once a week for 4 weeks and receiving 40mJ UV-B phototherapy three times a week for four weeks
receiving 40mJ UV-B phototherapy three times a week for four weeks
To measure the response of 25(OH)D to 40 milliJoules of UV-B light in white Caucasians with melanoidins-sunscreen from 3% DHA in comparison to the response of control subjects who have not used 3% DHA.
Time frame: 1 month
This study is completed, as verified in Nov 2009. You cannot join it, but the record below documents what was studied.
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Creighton University