How about we make a Top Ten list for posterity? Topic …. Barrier function.
On and off for the past couple of years, I have tried to help beginners on various forums, to create better products. One thing you can almost guarantee with beginner formulas are too little humectants, and not even a conceptual idea of barrier function. Other than their propensity to load them up with grease, they give the proverbial blank stare when you ask about barrier function, which I consider one of the cornerstones of making an emulsified moisturizer.
So…. Let me hear you shout out what you feel is both the most efficient barrier….and let’s spice things up with tossing in haptics. Some barrier functions will feel like exactly that….a barrier. Some can do a bit less effective job but can do it without hardly being detectable (the Ace up your sleave ingredient).
So here are the list parameters: List however many you choose to mention, and list them in order of effectiveness. Then off to the side…. mention those that are most intrusive….and those that get the job done…in an almost undetectable manner.
Have fun….and consider your efforts a gift the the next generation.