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The Cosmetic Ingredient Review has found 4% of this ingredient in repeat-insult patch tests on humans to be non-sensitizing
The single largest factor
Fluorinated (-CF x ) and methylated (-CH 3 ) functional surfaces have low surface energy and are not energetically favorable for water to interact with, leading to a hydrophobic surface with high water contact angles [1]
S.JernerenF.NellemannB.ValsdottirD.et al
The most important thing is resisting the urge to apply something to calm the skin, because doing so restarts the cycle
The goal is always a concentration where your typical dose falls between 5 and 50 units on the syringe, the zone where measurement accuracy is highest
