According to this article from the National Center for Biotechnology Information, "Ethanol use is associated with skin irritation or contact dermatitis...", among other concerns.
The harsh smell of ethanol intended for topical use is often caused by the "denaturing" treatment during the manufacturing process - in which harsh chemicals are added to make it un-drinkable. Isopropyl, on the other hand, is not a drinkable alcohol in the first place.
Due to the two concerns outlined above, we choose to manufacture Alchemy-Spetec hand sanitizer and surface cleaner with isopropyl alcohol because it's a healthier ingredient. We don't cut corners with our industry-standard polyurethane concrete repair products - and we won't cut corners with the sanitizers either. Rest assured.