If stabilized vitamin c ( Natural-C Glycol ™) Serum is registered with the FDA, can it be a finished product? If the pH value is too low to exceed the requirements, how can it be adjusted so as not to affect the substance?
If stabilized vitamin c ( Natural-C Glycol ™) Serum is registered with the FDA, can it be a finished product? If the pH value is too low to exceed the requirements, how can it be adjusted so as not to affect the substance?