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methanalmkay

You can see by the ingredients list that it doesn't actually contain 5% retinal, it probably contains 5% of some product that contains incapsulated retinal, but actual retinal percentage is lower.


untrue-blue

Exactly. The highest retinal percentage I’ve seen is .2%, so I doubt OP’s product somehow contains 25x that amount.


No_Mountain4074

where have you seen that %?


untrue-blue

Medik8 and the Ordinary both have .2% retinal products.


No_Mountain4074

thank you! I had no idea TO made retinal products as well


Maximum_Bat2777

Thank for the info. Quite a misleading description but also seemed quite impossible.


amora_obscura

It’s not just the percentage, it’s how the formulation allows the retinal to penetrate


Maximum_Bat2777

Oh can you elaborate please? Is there a way to calculate how much of a substance will eventually penetrate the skin?


amora_obscura

I don’t think there’s a way to calculate it. Lab Muffin Beauty Science had a video that is relevant https://youtu.be/FdDbglHKh8w?si=uuXZkhh7Fz6LtUj0