i am still having fun doing soaps, but have ordered FO from 3 places now. the first one seemed kinda expensive, so i tried another. they sent FO in plastic bottles which i hear is only done with cheapie scent? is this true? the third had great smells and came in amber glass, but seems to be fading faster than the first one. is this common? did i maybe just not use enough or do you eventually buy your FO's from a place that seems to have lasting scent? they seemed to smell fairly strong at first, but it just seems they have faded some now.