Hurling and Camogie players must buy their helmets from reputable sources or risk serious injury if they're hit by a hurl or sliotar.
The GAA and Consumer Protection Commission are teaming up to issue the guidance and both groups are emphasising the face guard.
Players should buy a helmet that meets the standards set down by Croke Park and should not alter it it any way after that.
The advice recommends buying already-assembled equipment, checking it for hazards and making sure it has a C-E mark to avoid risking catastrophic injuries.