There are many choices so here is my take on it...
Anyone know how I can restore the luster?
Thanks in advance!
I make holsters and repair leather as a business so this is what I would do:
Tandy has 2 products from Eco-Flo called Super Shene and Satin Shene. For a person who just wants a quick and easy shine they are your best bet. Get the smallest quantity you can it doesn't take much.
The Super Shene is VERY glossy and to match Bianchi's original finish the Satin Shene is probably what you want. If you want the best finish I would use Fiebing's Atom Wax but you will have to buff that with some lambs wool or a shoe brush. Again a little goes a long way but the Atom Wax will match the old finish very closely.
The Eco-Flo products are Acrylic and will not need buffing but you can. They also must be applied with a wool dauber or what I use in the shop is a 1 inch foam paint brush available at WalMart in the paint department. Walmart's are better then Home Depot's in my opinion but that is just opinion.
One other thing... You cleaned it right? Not knowing what was in the cleaner you used and the fact that it took off the finish it sounds like it may have dried out the leather a little. I would carefully inspect the leather for dryness. No worries though but if you pulled some of the tanning oils out you might want to condition the leather first. Then put a finish on it.
Neats Foot oil will work and it is the choice of the older guys in the business but it often darkens the tan. Another choice is Fiebings Aussie conditioner also available at Tandy Leather. My personal choice for conditioning is Lexol and I have seen it in the Walmarts auto section for leather upholstery but I buy mine in bulk. It doesn't seem to darken as much as the other two will and it is a favorite with horse people for their expensive saddles.
Now that I have gone all scientific on you the simplest if the leather is still supple is to just throw the Atom Wax or Satin Shene on it and go. If the Satin Shene does not shine enough just put another coat on it and buff it.
If you would have bought one of my holsters you could have sent it back for a free refinish and only been out the cost of shipping. Archangelleather.com
Hope this helps other as well as you...