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Is a humectant essential in a face wash formula? And questions about options.
How necessary is it to add a humectant to a face wash formula? Do humectants further reduce the irritation potential of a face wash (obviously in addition to formulating with a proper blend of surfactants for reduced irritation)?
Just wondering if it’s worth it to try another humectant. For some reason whenever I use glycerin in my face washes, I get a bunch of whiteheads. My skin somehow does not enjoy hyaluronic acid, either (my post-inflammatory erythema gets super red)….Can sodium lactate be used in a liquid, surfactant formula?
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