The end result of the lesson:
In this tutorial, I will show you how to do professional hair processing in Photoshop, add different shades and bring some shine to the hair.
At the beginning you should find a matching image of a woman with long hair. You can find the image through google or use this photo. Open the image and start doing this lesson with me.
The first thing you need to do to add some shine to your hair: select a tool Dodge Tool 
(Clarifier), use the settings for it – Brush (Brush): 100px Range (Range): Highlights (Lights), Exposure (Exposure): 30%. Treat some areas of hair as shown below:
After that, choose the tool Sharpen Tool 
(Sharpness) to add a bit of sharpness in some places.
OK, go to the next step. Now, go to the hair coloring. I prefer to create multiple lines and make them different colors. To create this effect use Polygonal Lasso Tool 
(Polygonal lasso) to create a selection like in my image below and fill the selected area with a color #ef8008 on a new layer.
After that, create five more selections, and fill each of them with such colors: # f51464, # cd1bd4, # 416fb4, # 41b0b4 and # b1ce06.
Remove selection – Ctrl +D and apply the filter Filter> Blur> Gaussian Blur (Filters – Blur – Gaussian Blur) with the following parameters:
The blend mode is changed to Overlay (Overlap), we get the result:
After this duplicate layer Ctrl +J and decrease Opacity (Opacity) up to 20% for this layer.
Move to the bottom of the hair. Create one new layer and make a new selection with Polygonal Lasso Tool (Polygonal Lasso), then fill this selection with color # b1ce06 on a new layer.
Add five more strips in the same way and use the same colors as before.
Remove selection – Ctrl +D and apply Filter> Blur> Gaussian Blur (Filters> Blur> Gaussian Blur) with similar settings:
The blend mode is changed to Soft Light (Soft light).
Increase color intensity by copying layer – Ctrl + J and install Opacity (Opacity) up to 60% for this layer.
Well, in this step we have finished the lesson. In the image below you can see the difference before and after.
