The white/silvery dots are perfectly normal and part of the plant.
Aloes will curve/bend toward the light source, just like any sun-loving plant will. Are your cacti indoors now? If so, they should be turned a quarter-turn every day or two, so that all sides of the plants get equal exposure to the light. Somewhere in the far-off distant past, I read that plants should be turned clockwise. As I recall, it had something to do with the cellular structure of the plant. I don't know if there's even an iota of truth to it, but I must have concluded that it was important, because to this day, I faithfully turn my plants clockwise.
Are you talking about the same aloe you posted a picture of a couple of weeks ago, or is this a different plant? That one appeared to me to be growing well. Pictures are always helpful.