How to achieve a photoshop photo effect

This is one of those infinite ways to add this effect situations.

1.  Camera RAW > Effects > Grain.  This used to work much better in earlier versions as you could control the size of the grain as well as intensity.  Nowadays it's just the intensity.
2.   Filter > Texture > Grain > Enlarged.  intensity was set about 50%
3.   This is more by way of a demonstration.  If you place a layer above the layer you want to effect and fill it with 50% gray and set its blend mode to Overlay it disappears.  However, and effect you apply to the 50% grey will be applied to layer below.  I used Filter > Sketch > Reticulation here.  I have left an outline of what it looks like with blend mode set to normal.
4.   Is the original with no effects.

Are you OK limiting the effect to just the face?

Because there are little flecks in the film grain, an easy way to replicate the effect would be to get a film grain image (something like this one from Adobe Stock), add it as a layer over your image, and apply a Blend Mode such as Screen. You could try other blend modes to see what looks the best.

Hi John,

Thanks for reaching out. Which version of Photoshop are you using?

There are different ways to do this grain effect. I am sharing some related videos; check them out.

1. https://www.youtube.com/watch?v=T2yf8DILHZI

2. https://www.youtube.com/watch?v=n4HMuBhE7yU

3. https://www.youtube.com/watch?v=P0cyyIhR3LA

Let us know if it helps.

Thanks,

Ranjisha