Plain razor requires shaving cream which is a prohibit item for transport by plane. I am wondering if it is necessary to switch over to electric razor.
Have you considered — or tried —
shaving oil?
Discovered it about a year ago, and it's what I carry exclusively in my shaving kit when I travel rather than bulky shaving cream aerosol. Amazingly effective, at least for me (have a medium-heavy beard and average skin sensitivity). Comes in small 1/2-oz. plastic bottle. Claim is up to 100 shaves per bottle (each use only 5-6 drops plus water). I haven't kept count, but not far off.
Got my last bottle at WalMart.