Where is Natural Moisturising Factor (NMF) obtained from?

Natural Moisturising Factor (NMF) is primarily derived from the stratum corneum of the skin, which consists of various compounds, including amino acids, lactate, urea, and inorganic salts. Among the options provided, the closest association to NMF can be made with the placenta, as it often contains a variety of bioactive substances that nourish the skin and can help in skin hydration and regeneration.

While other sources like seaweed, fruit extracts, and milk proteins can provide hydration and nutrients to the skin, they do not specifically represent the components or mechanisms associated with Natural Moisturising Factor. Instead, they may serve as supplementary moisturizers or ingredients in skincare formulations but do not form the basis of what NMF is about.

Thus, recognizing the role of the placenta in this context highlights the importance of its complex composition in hydrating and maintaining skin health, making it the most relevant option among those listed.