Aging Hands And Elbows Treatment L3 is customized by skin area and age group. Level 3 reflects the age group from 40-55. Has a dual effect to re-establish the skin's natural barrier system and slow down aging of the most sensitive and vulnerable areas. Protects hands against harsh weather. 2.0 oz BIONOVA Women's Nano Skin Tech Aging Hands And Elbows Treatment (Level 3) A great designer gift. Shop BIONOVA at Barneys New York.