Heat rubs & wraps?

What are the recommended heat rubs products? or more specifically, what active ingreidents do you want/don’t want?

I used icy hot cream with apercreme heat (couldnt find Forte). Seemed to work ok.

I have seen others mention other brands. Is the amount of heat from the cream a factor in the success of the wrap?

Also, I have heard somewhere wrapping certain creams may cause toxicity. I’m fuzzy on the details. Anyone hear something related?