Assessments of skin elasticity parameters , ie , the three R-parameters ( R@ or gross-elasticity of the skin , R@ or net elasticity of the skin , and R@ or biological elasticity ) , and the resonance running time ( RRT ) at both volar forearms of the two groups were performed during three visits : before starting oils consumption and application , after @ days of oils consumption and application , and after @ days of oils consumption and application .