What's actually in those instant hand sanitizer wipes?

Most of them are basically alcohol (usually 60-70% ethyl alcohol or isopropyl alcohol) mixed with water and some gelling agent to keep it from just evaporating instantly. The rest is usually glycerin to keep your hands from drying out too much, maybe some fragrance, and preservatives so the stuff doesn't go bad sitting in your bag. The alcohol does the actual sanitizing work, killing bacteria and viruses on contact - the other ingredients are just there to make it less harsh and keep the formula stable.

The gelling agent is actually the interesting part that people gloss over. You're dealing with carbomers or cellulose derivatives that turn the alcohol into something spreadable instead of just a puddle that evaporates in two seconds. The glycerin keeps your hands from getting that completely dried-out feeling, which matters because pure alcohol on your skin is honestly pretty harsh. I learned this the hard way years back when I was working a kitchen during flu season and went through sanitizer like crazy - my hands were cracking like old leather until someone showed me that the formulation actually makes a difference.

What throws people is that they think the wipes are doing something magic, but it's really just that the alcohol needs a few seconds of contact time to actually kill the bacteria. The gelling agent buys you that window. Some brands throw in a tiny bit of fragrance or aloe, which is more for psychology than anything else - makes it feel fancier but doesn't change the core job the product's doing.