Related Articles

• Portrait Editing and Retouching, Selecting and Masking Hair.

Information

• The Spot Healing Brush is the best tool for removing single fly away hairs. Make sure that the Content Aware button is selected so that it matches the edit to blend with the underlying hair. Do this with short brush strokes. 
• Highlighting - 
  ,
• Masking 01,
• Cleaning up hair border with background. Healing brush, pen tool to select the edge then paint in individual hairs to soften the edge. Clone inside gaps working dark first then light over it. 01,
• Dodge and Burn to accentuate hair.

Adding Volume to Hair

• The Photoshop Liquify Filter is a wonderful tool for adding volume to hair. (Ref 1:14)

Videos

• 3 Steps to Remove and Fix Flyaway Hair or Stray Hair in Photoshop by PIXImperfect
• The Ultimate Way to Remove Flyaway Hair in Photoshop by PIXImperfect
• Add Shine, Colour & Volume to Hair in Photoshop by Phlearn
• How to Add Shine and Dimension to Hair in Photoshop by PIXImperfect

Links From

• Ps Liquify Filter, Selecting and Masking Hair.