Pure retinol is extremely sensitive to oxidization and is prepared and transported at low temperatures and oxygen free atmospheres. When prepared as a dietary supplement, retinol is stabilized as the ester derivatives retinyl acetate or retinyl palmitate.
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Retinol is an active form of Vitamin A often used in skincare products
We can also supply Release Retinol, which is clathrated by Hydroxypropyl Cyclodextrin, with retinol content above 310000 IU/g. See Typical CoA of Release Retinol.pdf