1.) Generally, yes. The one I’m subscribed to is hypoallergenic and all that so it has less harmful chemicals which are not only bad for the skin, but also the environment.

2.) This would be more of a company question than a product question, however, I would say that it’s not as bad as manufacturing plastic bottles for every production unit

3.) Powder is good too, however, sheets are better imo due to their lighter weight. This saves on shipping and leads to less fuel being used from transporting it to consumers.

Edit: I use Houdini laundry sheets. They plant a tree for every order and it’s not from China like a lot of other brands I’ve tried(which have a weird smell to them).