I have a very good friend who owns a Kangen unit and is a distributor. As is par for MLM products, it is very large on claimed benefits, very expensive and most of his efforts are recruiting others to buy the machine and be part of his downline.
When it comes to emulsifying fat, I think that the accompanying diet and any good water might well do the same, the same as I think is true for other advertised benefits.
As for grey hairs, you know age always wins in the end, but I understand wanting to do all we can to beat and postpone it. Try fo sho wi (also called fo who wu) and kambocha tea and plenty of omega 3s for your grey hairs. All three have been reported to work for some people. And avoid smoking, coffee, stress and excessive alcohol.
Tell your husband congratulations on his blindfolds.