Polyhydroxy Acids (PHAs) like Gluconolactone and Lactobionic Acid offer the skin-renewing power of AHAs without triggering stinging, photosensitivity, or erythema.
1. Why PHAs Outperform Glycolic for Reactive Skin
- Molecular Dimension: Larger molecular radii slow epidermal penetration, preventing sudden nerve receptor firing and irritation.
- Intrinsic Humectants: Multiple hydroxyl (-OH) groups attract atmospheric water, leaving skin plumper and more hydrated post-exfoliation.
- Chelating Antioxidants: Scavenges free radicals and binds trace heavy metals to prevent environmental oxidative stress.
