this is stock foto, and my bad foto ( added some color :P )

Okey, let's begin retouch this foto

Fisrt, select bad area

this foto on 3 channel ( RGB ) on channel, more brighter, more color

Duplicate document, then arrange them as Title Vertically mode ( Windows >>
Arrange >> Title Vertically )

Bring bad area to new layer by pressing Ctrl + J , change mode to Color ( on
first document only )

Press Ctrl + I to invert color ( IMPORTANT STEP )

now, stand on every 3 channel, change Opacity parameter to bring bad area
have same color with good foto ( only black, white and gray )

Stand on RED Channel

on 33% opacity , the bad area have same color with good area

press Ctrl + A to select All, then  Ctrl + Shift + C to Copy Merged , go
to right document, press Ctrl + V ( dual document, must stand on RED Channel )

-why must have dual document ?

-when stand on RED Channel, you have 33% opacity, it ONLY correct on channel
RED, wrong on channel GREEN or BLUE

unhide all channel, we have this result, it not okey, it have any wrong color
area

now, on second document, you can close first document now.

use Patch Tool, retouch margin areas

make new layer, blending mode = Color, use Eyesdropper Tool to get some
sample color, then use Soft Brush, retouch wrong color areas

wrong color on eyes, use lasso tool, creat selection, bring them to right
color

result !

draw right side hair color follow these arrow

Our result foto and Stock foto

if u retouch some details, you'll have best result :)