https://www.reddit.com//r/wicked_edge

You'll have to learn how to use a double edge safety razor or shavette or straight razor and do a 3 pass shave with the grain, across the grain, against the grain your hair grows to get it glassy smooth.

You can try it with a normal cartridge razor but some people get ingrown hairs since to make them cut you need to press down pretty hard and hairs can get cut beneath the skin and then not grow out properly.

Also depending on how fair your skin is and how dark your hair is it might be physically impossible to not see it even if its perfectly smooth and you cant feel it. In that case you might need some make up.