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Collagen is not absorbed by the skin?!
Collagen is not absorbed by the skin?! Collagen is a vital protein for maintaining skin health and elasticity,but a common question remains: how does collagen applied externally actually penetrate...
Collagen is not absorbed by the skin?!
Collagen is not absorbed by the skin?! Collagen is a vital protein for maintaining skin health and elasticity,but a common question remains: how does collagen applied externally actually penetrate...