If solution storage is necessary, researchers commonly use sterile buffers around pH 56, aliquot to reduce freezethaw exposure, and store refrigerated shortterm (often referenced as up to ~30 days at ~4C (39F) as general guidance), freezing when not in use depending on the protocol
Interestingly, this ingredient can organize into the structures that mimic the skin's own lipid architecture to help support barrier function and reduce transepidermal water loss (TEWL)
Folic acid is a B-complex vitamin needed to form healthy cells, especially red blood cells
Pharmacol Ther (2018) 48:121331
Delshadi R, Bahrami A, Tafti AG, Barba FJ, Williams LL (2020) Micro and nano-encapsulation of vegetable and essential oils to develop functional food products with improved nutritional profiles