An adjustable razor allows you to set the blade angle and thus the razors aggressiveness. As a Safety Razor beginner, you can set the razor to the gentlest setting and slowly adjust it gradually until you find just the setting that is right for you.
A Safety Razor uses the classic square razor blades
which are sharp on both sides. You are assured of a smooth and close shave without irritation.
With a razor like this you will save a small fortune on razor blades in the future. So you no longer have to compromise on the sharpness of the blade.