Can B12 be absorbed through the skin? An in-depth look at transdermal absorption
                                
                                
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                                    4 min read                                
                            
                                Scientific research confirms that the vitamin B12 molecule is too large for effective passive absorption through the skin. This article will delve into the mechanisms behind nutrient uptake to definitively answer the question: can B12 be absorbed through the skin, and what are the most reliable alternatives for correcting a deficiency?