I often brush Tik Tok and see many anchors holding collagen drinks, which are oral beauty products. Is this oral anti-aging product safe? {The dividing line is a straight line}?

Skin care products coated on the face also have preservatives, but they all have relevant dosage standards and will not endanger health. There are also international standards for oral administration, and conscientious businesses generally do not sell them. The scope of action of oral anti-aging products is comprehensive, and skin care products only have an effect on the applied parts, but there are always some places that cannot be taken care of.