Trying Lotion Samples from Stores

I have purchased so many jars of creams and lotions that end up not having the result I was hoping for. They are too thick, make me sweat, or have no results at all, etc. I keep empty clean RX bottles in my bag and I just put a few pumps in the bottle when I see a sample of a new cream. That way I can try it out for three to five days and see if there is any problem with it.