Background: The global incidence of neurological diseases has been on the rise. creating an urgent need for a validated marker. Neurofilament Light Chain (NfL) holds promise as such a marker and has garnered significant attention in the field of neurological diseases over the past decades. Methods: Corresponding articles from 2013 to 2023 were collected from the Web of Science database. https://cosmeticssquadets.shop/product-category/diffuser-oil/