Dulling down the finish is simple and doesn't require any additional finish.I use Brownell's Stock Rubbing Compound.It is made for exactly that purpose and is no more difficult than waxing the bow.Just rub the bow down with it and and wipe off the residue.It is easy to get a very even,satin look and the finish will be smooth as silk.It takes only minutes to do.
Birchwood Casey sells a similar product,they call Stock Sheen and Conditioner.It works exactly the same way and you may be able to find it in a local,sporting goods store.