Is it good to use Irish moss, if I'm using a beer kit to brew beer. The research I've done says I should add it to last 10 minutes of the boil. Does anyone know any different.
The answer depends on the type of beer kit being used. Some are based on malt extract and some are based on grains.
If the kit is "all grain" based then the Irish Moss can be added as recommended above/elsewhere.
However, beer "kits" are usually based on canned malt extract, although some kits provide dried malt extract. If that is the case then the use of Irish moss or protofloc/etc is IMHO not required. The "mashing" operation has been done at the factory and the brew will clear well on its own. I might add that if the kit is a canned extract kit then IMHO boiling is not required at all.