Retinol is a skincare hero.
For starters, in the case of retinol, you kind of do want to judge a book by its cover - or, rather, consider the packaging as integral to the product. Dr. Maryam Zamani explains: "Packaging and formulation is key in determining which form to use. Retinol generally can be sensitive to air and light; however, if encapsulated, retinol is less affected by these factors…"
And that’s where things get even more confusing - all retinols aren’t equal, with brands relying far too heavily on the fact that it is included rather than on the form in which it comes and how effective it’ll be when using. Consider that cosmeceutical retinols use around ten times more retinol content than prescription retinol and you get some idea of how key formulation is.
This lends some credence to naysayers who question the importance of percentages but rather insist on choosing a retinol from a brand who formulates well.
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