You can add glycerin to a 70% gel, all you need is 2-5 mls per 100 mls. As long as the percentage of alcohol stays above 60% with the dilution, you still get the antimicrobial effect but also get the emollient effect with the glycerin. I use just straight alcohol (no gel) with glycerin mixed in. Need to wash the glycerin residue up after 4-5 uses though.

Eric