Some scientists have concluded that the perfect head-to-toe tan is but a pipe dream, as certain areas of the body are less prone to tan than others. The result, for those who seek to boost their color in the nude, is that varying shades of tan appear.
What’s the main area of stubbornness? The buttocks. They’re more resistant to tan than the rest of the body – and even when exposed to the same amount of UV light, the buttock is likely to resist taking on an equivalent golden glow.
The study, which compared the tan retention rate of different areas of the body, appeared in the Experimental Dermatology journal.
Source:
Live Science: Total Body Tan is a Total Myth, Study Finds