In that case you can use the straight 70 % isopropyl alcohol as a sanitizer and be fine. According to the WHO guidelines, only the isopropyl alcohol is the effective substance in the recipe. The hydrogen peroxide is ‘used to inactivate bacterial spores in the solution’. If you buy medical-grade 70 % isopropyl alcohol, there shouldn’t be any bacterial spores in it.
The glycerol serves as a humectant. If you don’t add it, you might have to use more sanitizer in order to keep your skin wet for the whole thirty seconds. And you’ll have to keep your skin happy in some way separate from the sanitizing.
In that case you can use the straight 70 % isopropyl alcohol as a sanitizer and be fine. According to the WHO guidelines, only the isopropyl alcohol is the effective substance in the recipe. The hydrogen peroxide is ‘used to inactivate bacterial spores in the solution’. If you buy medical-grade 70 % isopropyl alcohol, there shouldn’t be any bacterial spores in it.
The glycerol serves as a humectant. If you don’t add it, you might have to use more sanitizer in order to keep your skin wet for the whole thirty seconds. And you’ll have to keep your skin happy in some way separate from the sanitizing.