Tub of Boots Aqueous Cream, Tub of Boots Derma Cream, 70ml Witch Hazel, 10ml antibacterial essential oil (you can use any so long as its antibacterial, I use Tea Tree Oil, stinks like rotten socks though). Mix the two creams together, add the Witch Hazel, then slowly stir in the oil. When mixed put back into the tubs. As I mentioned earlier, one of the ingredients doubled in price, the Derma cream since they started putting it into a dispenser tub, but if you prise the top off and refill it it with the chamois cream it makes it easier to dispense. I have tried the creams from other cheaper sources but only Boots own brand works the best.
Its not my recipe, its a well known one made by a rider and used by the pro's which was on the now long gone website, Gazzetta della Bici, and with a contribution by Bradley Wiggins wife of adding the essential oil. An application of this will last me an entire 400K audax and even a 600K one and even stays on in the rain. If I recall, it went on sale which is why there is no website with the explicit details for it and my search for it online now make me believe it became called Enzo's buttonhole chamois cream. Somewhere on one of my many backup DVD's, I have all the webpages saved about it.
Here's a bit of a link to it with some basic details:-
http://www.owenphilipson.com/blog/2012/04/02/homemade-chamois-cream-recipe/