The skin is the largest organ in the body and absorbs whatever you put on it. I don’t think aftershave will derail you but there are certainly natural alternatives.
At your local health food store there are plenty of alcohol free natural products.
If you want to go ultra natural I would recommend witch hazel as an aftershave it will close the pores and cleanse the skin.
Deodorant. I don’t know how far along in the program you are, I’m a little over a month and I’ve found that I no longer need to wear deodorant. Since I’m not consuming any toxins and over processed foods my skin is pushing out less toxins. I know everyone is different but I can go through a stressful 9 hour workday and then I usually work out for 1-3 hours in the evenings at at the end of all that, my under arms are not too shabby.
There are a few ultra pure deodorant methods:
1. coconut oil (an amazing product) works great, however, this will stain your clothes.
2. Apple Cider Vinegar: has a vinegary smell at first but this wears away and helps kill the bacteria that makes you “smell” (dab on with a cotton swab)
I would steer clear of anti-antiperspirants though because these prevent your body from releasing toxins, which on this diet, you don’t want to do anything that prevents the release of toxins.
Hope this helps.