"A soap is a cleanser with a high pH, one of about nine or ten while the pH of skin is about five. Thus, using a soap on the skin can disrupt its normal pH, causing a barrier breakdown and ...

This happens because soap has a lower acidity level than the skin, and the mismatch upsets the skin’s pH balance. Soap may be especially problematic if it’s not rinsed off thoroughly ...

Bar soap has a simpler ingredient list but may not ... And some skin types notice this more than others. "The natural pH of skin is slightly acidic, around 4.5 to 5.5, while bar soaps typically ...

DEA may be present in cosmetic ingredients such as soap to help the product foam and lather up or to adjust the pH level of the soap. According to the FDA, an older study from the National ...

I approached it like a laboratory experiment. I measured the quantities of the ingredients, took note of the times, and registered the pH of the soap. It’s ready to use when it reaches neutral ...