It's really hard to get that oil out of just the forlock and the mane when showing. Try this instead: On a very warm day when the temp is at least 70 bath your horse, scrub with a brush all the way down to the skin, before rinsing coat him with conditioner, and kind will do I use diluted pantene, then rinse with the shower attachment, then starting on the center of the back use the full attachment and hose down, the hair usually just cascade offs Then use your sweat scraper, and towel off. Let the horse dry in the sun. Spray with show sheen or similar product and use a shedding blade, then brush as usual. It won't get it all out, but believe me it will get a good amount of dead hair off.