Pick brands named with the NSF Worldwide, US Pharmacopeia, Guarantors Lab, or Customer Lab seal. These confirm that the item really contains the fixings that the name says it does, and that the item has no possibly destructive fixings
In humans, vitamin c.
It is a compound, so it is a pure substance.
No calcium is in pure vitamin C. It is possible a manufacture may prepare the calcium salt of vitamin C in its formulation. The label would indicate that.
Yes because it is 1 compound: C4H5N3O. It does have to mix with other compounds to be created.
It is a compound, so it is a pure substance.
Vitamin D, Vitamin B, Vitamin E Good for me, makes you pee Anything with the "ee" sound really.
Not exactly. The body will convert Beta Carotene into Vitamin A when it is needed. That's why Beta Carotene is the preferred and safer version of Vitamin A... you can overdose on pure Vitamin A easier than you can on Beta Carotene
skin
B
No, collagen is a type of protein and retinol is a pure form of Vitamin A.
Vitamin E is an anti-oxidant which is very soothing if applied to a burn. (But can be sticky and difficult to apply to the skin in its pure form)
Pure evil