Skin progressively undergoes age-related changes by intrinsic and extrinsic factors, and the characteristics or the time of onset might be different in each body sites. Therefore, we investigated skin changes including elasticity and skin texture such as roughness and topography with age. 
Total 201 Korean women (20-79 years of age) were participated in this study and they were divided to six groups by age (20s, 30s, 40s, 50s, 60s and 70s). The skin texture related parameters on forearm, hand and leg were evaluated. The skin gross elasticity (R2) was measured using Cutometer® (Courage+Khazaka electronic, Germany). A replica was taken from the skin of subjects using Silflo (Cuderm, USA), and the roughness (Ra value) was measured using PRIMOS® premium (GFMesstechnik, Germany). Also, the skin surface magnifying images were taken by Aramo-SG (Aram Huvis, Republic of Korea) and the area of polygonal structure formed by primary or secondary microrelief lines were calculated using skin texture analysis software TexskinTM (Amoreapcific, Republic of Korea). 
As a result, a tendency for the skin elasticity (R2 value) on forearm, hand and leg to decrease with age was confirmed. Compare to 20s, the significant difference of skin elasticity was appeared from 40s on forearm, 60s on hand and 50s on leg skin, respectively. The skin roughness (Ra value) on forearm, hand and leg was higher in elderly people. The significant difference of skin roughness with 20s was appeared in 60s on all measuring sites. The area of polygonal structure on the forearm and hand skin was increased with age. The significant difference of the skin microrelief structure was appeared from 40s on hand and 60s on forearm. The polygonal structure was not well marked on the leg skin, and there was no significant difference at the size and number of polygonal structure on leg skin. 
In conclusion, the skin texture was changed with age, and the aging progress was different on the body site. The decrease of skin elasticity was appeared on the forearm skin earlier than other sites, the structural change of microrelief was shown earlier on the hand skin. It is supposed that hand skin frequently exposure to UV light and washing detergent. Also, the appropriate skin care is needed for each body sites.

The body skin texture changes with age in Korean women