Action: Skin Enhance > Lab Duplicate first document Flatten Image Select green channel Set Selection To: all Copy Select RGB channel Paste Anti-alias: none Set current layer To: layer Mode: luminosity Convert Mode To: Lab color mode With Flatten Duplicate current layer 2 Select a channel Apply Image With: calculation Source: current channel of merged layer Calculation: overlay With Preserve Transparency Set current layer To: layer Name: “A channel overlay” Set current layer To: layer Blend Only: a Layer Styles: layer styles Scale: 333.3% Duplicate Background 2 Select b channel Apply Image With: calculation Source: current channel of merged layer Calculation: overlay With Preserve Transparency Show lightness channel, a channel Set current layer To: layer Name: “Yellow skin tint - B ch” Select layer “A channel overlay” Set current layer To: layer Name: “Red skin tint - A ch”