These choices include the sun protection factor (SPF) rating, which can vary from 8 to 50. SPF is a measure of how much sunlight (UV radiation) is needed to develop sunburn after a sunscreen has been applied, compared to the amount of UV radiation required to develop sunburn on unprotected skin.
Geddert founded Twistars in 1996; its primary competitive training center is in Dimondale, with a second location in DeWitt. The state Department of Licensing and Regulatory Affairs confirmed Tuesday night that Geddert is still considered the resident agent and president of Twistars USA Inc.
Dr. Gundry is a reknowned cardiothoracic surgeon and preventative cardiologist, New York Times best-selling author and medical researcher. During his 40-year career in medicine he has performed over 10,000 heart surgeries and developed life-saving medical technology.