Source NaturalsSkin Eternal Hyaluronic Serum 1.7 Fl. Oz.

Does this Hyaluronic Serum come in a glass bottle or plastic?

If a fan of these products, what order is recommended for younger healthier skin?

How long until this hyaluronic acid serum is back instock??

I also use the skin eternal serum. Should I use both? If so how?