How long should Outshine take to make a difference?

[kgj66]

As above really!
My horse has been on the recommended amount for about 2 weeks now and I'm not seeing any difference. I know it isn't very long at all but don't want to fork out for another bag if most people start seeing results at this point!

Thanks

 

[Petalpoos]

My friend feeds it to her horse and he is really shiny. I can't remember how long it took to take effect, but I don't think 2 weeks is very long, plus they are changing coats at the mo and will always look a bit mothy until the new coat comes in. I would say persevere.