The grips below had my standard Tru Oil high gloss finish on them. It consisted of 21 coats.
I used the Birchwood Casey's Stock Sheen & Conditioner on them to make them low gloss.
I just put a little on a cloth and rubbed them down, then rubbed with a clean flannel cloth.
I repeated this once more for a total of no more than 5 minutes to take them down to a low gloss finish.