Differences of skin characteristics between face and hand and its correlation with age in female from Shanghai / 中华医学美学美容杂志

ABSTRACT

Objective To estimate the differences between face and hand skin and age correlation in females aged 23-46 years living in Shanghai.Methods 139 women aged 23-46 years from Shanghai attended this program.The water content,pH,TEWL and elasticity of cheek,forehead,hand back of and palm were evaluated by non-invasive skin test instruments.Results The skin water content of these four parts from high to low were forehead,cheek,hand back and palm,and they were different from each other significantly.The pH of cheek was the highest,and forehead was the lowest;there was no significant difference between hand back and palm.TEWL of palm was the high-est,and cheek was the lowest;the difference between forehead and hand back was inconsistent in different age groups.The elasticity of cheek was the highest.There was no significant difference in R2 between forehead,hand back and cheek.The condition of R5 and R7 was different between younger group and older group.In young group the cheek was the highest,and palm was the lowest.In older group,cheek and forehead,palm and hand back began to converge.In addition to the elasticity of cheek and hand back,other parameters of other parts had no significantly difference between different age groups,and also had no significant correlation.Conclusions The cheek has the best skin barrier,elasticity and the highest pH,and the elasticity of cheek decreases with age.The forehead has the highest water content and lowest pH,TEWL and the elasticity of hand back are close to the forehead,and the elasticity of hand back decreases with age.The palm has the highest TEWL and lowest water content.Its total recovery amount in the elastic curve is higher,but the elastic ratio in the recovery is the lowest.