Glycolic acid (GA) is well-known for its skin rejuvenating effects, but it can also sometimes cause irritation, especially at high concentrations and low pH levels. Recent research sheds light on how adjusting GA to a skin-friendly pH of 4 can deliver impressive anti-aging benefits while reducing the risk of irritation and inflammation.
The study explored the effects of GA at various concentrations (8%–25%) on human skin samples, focusing on its ability to promote desquamation (gentle exfoliation) and collagen production without triggering inflammation. After daily applications over five days, researchers observed that all GA formulations stimulated collagen production, with higher concentrations offering the most significant results. Importantly, none of the formulations increased levels of TNF-alpha, a marker of skin inflammation, suggesting that a pH-adjusted GA formula can help renew and firm the skin without causing unwanted irritation.
Takeaway for Your Skincare Routine:
This study supports the use of pH-adjusted glycolic acid as a highly effective, irritation-free way to promote collagen and skin renewal. By choosing products with GA at pH 4, you can enjoy the anti-aging and smoothing benefits of GA without compromising skin comfort or barrier health. Whether your goal is to reduce signs of aging or enhance overall radiance, pH-balanced glycolic acid offers a gentle, customizable approach to youthful-looking skin.