Is PHA or Glycolic Acid Better?

Based on the provided reference, PHA (specifically gluconolactone) is presented as a better option for individuals with sensitive skin compared to glycolic acid.

Understanding the Differences: PHA vs. Glycolic Acid

Both Polyhydroxy Acids (PHAs) like gluconolactone and Alpha Hydroxy Acids (AHAs) like glycolic acid are popular chemical exfoliants used in skincare. They work by helping to break down the bonds between dead skin cells, promoting cell turnover for a smoother, brighter complexion.

However, they differ significantly in molecule size and how they interact with the skin. Glycolic acid has a very small molecular size, allowing it to penetrate deeply and quickly. While this can lead to effective exfoliation, the provided reference highlights a key drawback:

• Glycolic Acid: "For many people, glycolic acid may simply be too aggressive, leading to irritation, redness, and increased sensitivity."

The Case for PHA (Gluconolactone)

PHAs have a larger molecular structure than AHAs. This larger size means they penetrate the skin more slowly and superficially, resulting in gentler exfoliation. The reference specifically calls out gluconolactone, a type of PHA, for its benefits:

• PHA (Gluconolactone): "Enter PHA gluconolactone! Gluconolactone is claimed as the sensitive skin savior here to deliver all of glycolic acid's benefits without the skin irritation."

This suggests that for those who experience negative reactions like irritation, redness, or sensitivity from glycolic acid, PHA offers a compelling alternative that can provide similar skin benefits without the harsh side effects.

Key Takeaway Based on the Reference

The primary distinction emphasized in the reference is the difference in potential for skin irritation:

Therefore, if your skin is prone to irritation or sensitivity when using chemical exfoliants, the reference indicates that PHA, particularly gluconolactone, is the preferable choice.