@Demaratus, according to my boss at work, the Process engineer, 5% (.8oz) glycerin in a 16oz bottle of store brand witch hazel (86/14) that we make is perfect for a post shave.
Monday morning before I left work, I asked him about it to confirm my math and that’s what he said.
This will maintain a better than 80% WH concentration. Technically, you also have to factor in the alcohol as well since it is mixed throughout and has astringent qualities as well. Because of this, if you add anything else, you have to account for the 6:1 ratio of WH to alcohol when doing your math to maintain the proper WH concentration.
AoM; B.O.S.S.;Knight of the Veg Table;MFR2019
Well that’s helpful to have a process engineer handy
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