I just started playing around with making my own aftershave. I haven't been able to find many concrete numbers on the percentage of alcohol in aftershaves. Thayers Witch Hazel aftershave is 20%. It's pretty calm though compared to other brands I've used. I've read a few recipes and some are around 60%. I read one source that said aftershaves are 40-60% ABV. I'll certainly experiment but if anyone has any knowledge of industry standards, or specific aftershaves and ABV, please let me know. Thanks,