This solution is labeled alcohol-free will it still work as effectively?

Alcohol in minoxidil solutions mainly helps the medicine penetrate the scalp faster, but it can also cause more dryness, irritation, or flaking, especially on sensitive skin. An alcohol-free version of Minoxidil 5% w/v Solution still delivers the same active ingredient and works just as well for most users it may simply feel gentler and absorb a touch more slowly. If you have a particularly sensitive or oily scalp, this version is often the more comfortable choice, but do mention any scalp reactions to your doctor if they come up.