Vitamin D3 is made by the skin when exposed to sunlight, can be found in certain foods, and taken as a supplement or injection
Skin care: Ascorbic acid, azelaic acid, AHA pulsed weekly
CellPeptides.com is one example of a supplier that provides product information and testing details
This work was supported by the National Natural Science Foundation of China (31300978) and the Hebei Innovation Capability Improvement Plan Project (22567619H)
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International journal of general medicine