Meet PHAs, the chemical exfoliants your sensitive skin might just love:
researchers found evidence that gluconolactone could prevent some UV-induced damage in mouse skin cells.
These same researchers also looked at the effects of gluconolactone in 11 human participants who applied two lotions to specific areas of their backs six times a day for four weeks. One lotion contained glycolic acid, one contained gluconolactone, and a third designated area didn’t get any lotion. After that time the researchers exposed a 1 cm area of the application sites to a device that simulates UV rays from the sun and then those areas were biopsied.
Obviously this doesn’t mean that you can skip sunscreen if you’re using a PHA, Dr. Ngo says. Still, if you’re already using a PHA for exfoliating purposes, it’s nice to know you may be spared from some sun-sensitizing effects commonly associated with other chemical exfoliants. And it’s another good sign that PHAs won’t exacerbate sensitive skin the way other chemical exfoliants might, Dr. Ngo adds.
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