STEP 3
Time to add solid color to our image. Retro images are having more amount of Magenta. So to add magenta go to Layer>New Adjustment Layer>Solid Color. Change the color code to #ff00ff. Press OK.
Change the blend mode of “Solid Color Adjustment Layer” to Soft Light and reduce the opacity to 27%.
I have written a whole tutorial on Blending Modes in Photoshop and you should check that tutorial out if you are not aware of the power of Blending Modes.