Glass skin- small pores- what is it?

The question that I have is I notice many actresses, influencers etc have nearly flawless skin. Perhaps it’s makeup to some degree I’m sure, but I’ve heard ppl talk about microneedling, derma-planing etc and I’m just curious. Using Whitney Leavitt as an example. I watched SLOMW this last season and her face has gotten exponentially better over the years, with minimal makeup. I think fundamentally speaking, many women are using Botox which gives that tight forehead and outer eye look. But is there something else skin care wise that is helping these women have better skin? I am a low maintenance gal who prefers simplistic looks but now I’m actually seeing what aging looks like so I’m curious if anyone knows if there is a non-surgical reason that people’s skin is looking so good.