Abstract:
UV radiation are divided into 3, namely UV A (400 – 315 nm), UV B (315-280 nm),
UV C (280 – 100 nm). UV C radiation have the greatest effect on skin damage compared to
UV A and UV B. UV radiation can reach the earth's surface, that can cause burning of the skin
with signs such as redness of the skin (erythema), pain, blistering and peeling of the skin. Until
now there has been no research on the effect of long exposure of UV C radiation on the
erythema and melanin index, so aim this research is know about the effect of long exposure of
UV C radiation on the erythema and melanine index. This research was conducted by giving
exposure to rat that had been shaved with variations in exposure time, namely 5 minutes, 10
minutes, 15 minutes and 20 minutes. The skin that has been exposed with UV radiation will be
photographed for color analysis using a chromometer. The results showed that exposure of UV
radiation for 10 minutes caused the greatest increase in the melanin and erythema index
Keywords: UV C radiation, length of exposure, erythema index, melanin index, rat
