Evaluation of the effects of 10% and 30% gluconolactone chemical peel on sebum, pH, and TEWL.

Background: Gluconolactone (GLA) exhibits antioxidant and moisturizing effects. It also presents soothing effects, protects elastin fibers from UV‐induced degradation, and improves the function of the skin barrier. Aims: Evaluation of skin parameters such as pH, transepidermal water loss (TEWL), sebum levels before, during, and after a series of applications of 10% and 30% GLA chemical peel in a split‐face model. Materials and Methods: The study involved 16 female subjects. Three split‐face procedures were performed using two concentrations of GLA solution applied on two sides of the face. The skin parameters were measured before treatments and 7 days after the last procedure at four measurement sites on either side of the face, that is, on the forehead, around the eye, on the cheek, and on the nose wing. Results: Measurement of sebum demonstrated some statistically significant changes between sebum levels in the cheeks after a series of treatments. The pH measurement showed that the pH value was reduced after each treatment at all measurement points. The level of TEWL after treatments was significantly lower around the eyes, on the left forehead, and on the right cheek. There were no significant differences between the use of different concentrations of the GLA solution. Conclusions: The results of the study show that GLA has a significant influence on lowering skin pH and TEWL. GLA also has seboregulatory properties. [ABSTRACT FROM AUTHOR]