Many aftershave products claim that shaving creates micro cuts in your skin which can be dealt with by applying their products.
Most notably, Wikipedia states:
It contains an antiseptic agent [...] to prevent infection of cuts, as well as to act as an astringent to reduce skin irritation.
The Wikipedia article names no sources for this claim.
Dr. S. Manjula Jegasothy states(1) that:
After-shave products have been used historically to prevent infections that arise from any possible minor nicks/cuts on the face after shaving.
but her "Miami Skin Institute" looks dubious to me, as it tries to sell various skin products.
I wasn't able to find any studies which indicate whether aftershave products provide a measurable health benefit.
Is applying aftershave after shaving helpful in reducing infections?