As orthodoxy goes, Neutral is a n no. Mac method, Nick Horween, Alden , Alden Carmel etc... Too much buildup of a neutral over the impregnable hide will never allow the patina to develop. A minority disagree, but a polish every 15 wears or so should be of a colored wax ( some say cream). Just sayin, 20 yrs of wearing a dozen pair and never used neutral. Bring it on, I won't argue
Not arguing, but inquiring: What to do when Saphir doesn't have an appropriate color of wax? I have one (soon to be two) pairs of Ruby shell shoes, and unsurprisingly haven't found a corresponding Saphir cream.