Natural Aloe Vera or Store Bought??

Ok this is a two/three part question!
When your making your products, do you use store bought aloe vera or aloe vera from a plant you have at home??
AND if you do use aloe vera from a plant, what kind of aloe vera plant do you have??
My grandmother has always had aloe vera plants. She used the plant juice for cuts and burns when I was younger but never for hair. But the problem is she has a lot of different varieties of aloe vera plants and I don't know which one to use.
Does it matter what species of aloe vera the plant is??
When your making your products, do you use store bought aloe vera or aloe vera from a plant you have at home??
AND if you do use aloe vera from a plant, what kind of aloe vera plant do you have??
My grandmother has always had aloe vera plants. She used the plant juice for cuts and burns when I was younger but never for hair. But the problem is she has a lot of different varieties of aloe vera plants and I don't know which one to use.
Does it matter what species of aloe vera the plant is??
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