A Study on the Changes of the Skin Color of Korean Male Students in Summer / 대한피부과학회지

ABSTRACT

This study was undertaken to clarify whether the color changes of skin in summer are remarkable or not. The skin color of abdomen, extensor and flexor of forearm, forehead, and cheek were measured in 27 health male students who had never tanned their skin intentionally during this experiment with Color and Color Difference Meter(Nippon Denshoku Kogyo Ca. CP6R 1001-DP) which represents skin color as 'L', 'a', and 'b' values. The 'L', 'a', and 'b' values mean the degree of lightness, redness, and yellowness respectively. Measurements had been performed four times repeatedly from summer(june) to auturmn(October) with intervals of 6 weeks. The obtained values were evaluated with statistical method, and the results were sumrnarized as follows l. Abdominal skin showed no significant color changes in this experiment. 2 Extensor and flexor skin of forearm showed significant decrease in lightness from July, and the degree of decrease was more remarkable on extensor skin than on flexor skin. The lighteness had not been recovered by October on extensor skin and by September on flexor skin. There was no significant change in redness and yellowness on both places in this experiment. 3. Forehead skin showed no significant change in lightness and yellowness in this experiment, and showed transient decrease in redness in July. 4. Cheek skin showed no significant change in lighteness and redness in this experiment, and showed transient increase in yellowness in October.