Hi guys, i was trying to unwrap this face but i don’t even have visible vertices on my mesh? Btw i modeled this from a sphere, so i guess it had to have vertices/faces at some point? So how am i supposed to add vertices and faces to this to unwrap them later?
Sculpting, for all its advantages, usually produces meshes far to chaotic and/or high-density for . . . most things, really, including UV unwrapping. This is why retopology is so important. There’s a lot of info available on current best practices for retopologizing human faces, mostly on YouTube.
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thank you sooo much!! i didn’t know it was called “retopology”
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“I could google this myself if I only knew / could remember what it’s called!” is my favorite reason for posting questions here. Happens to a lot of us. 
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@Aylin
Depends what the model is for. I know this was marked as solved, but I’ll try to save you from going that hard road if you don’t have to 
What I do is, if it’s a personal project I don’t UV ever (or almost never). It just takes way too much time to retopo and UV something. So I’ll usually do a combination of UV-less texturing/Node-based texturing, and some poly-painting (if there’s enough geo for that, if not then you can use automatic unwrap on the mesh)
I will retopo and unwrap my sculpts only if it’s a production model, and it’s a requirement.
Auto Unwrap or Smart UV Project as it’s called in blender:
Good luck!
BTW how many polys does your model/object have?!