# Comparison of Efficacy and Willingness to a 5% Gluconolactone‐Based Topical Serum and Intense Pulsed Light in Mild Erythema of Rosacea: A Paired Control Study

## TL;DR

A study compared a topical serum and IPL treatment for mild rosacea erythema, finding IPL more effective for overall facial improvement.

## Contribution

This study provides a direct comparison of a 5% gluconolactone-based serum and IPL for treating mild rosacea erythema.

## Key findings

- IPL treatment showed greater efficacy in reducing erythema and improving facial condition compared to the topical serum.
- Both treatments improved pores and skin tone similarly.
- Treatment willingness and satisfaction were influenced by side effects, cost, and treatment duration.

## Abstract

Mild erythema is a common affliction of rosacea. Many methods including drugs and phototherapy (e.g., Intense Pulse Light, IPL) have been tried to alleviate symptoms. Topical applications for enhancing moisturization have also been thought to be of some benefit. In this study, the improvement of erythema and skin physiology parameters were assessed after a topical serum (5% gluconolactone‐based serum) usage or a single IPL treatment, and the differences in improvement between the two groups were compared. The treatment willingness of the subjects was also performed.

In this study, 200 subjects with mild erythema were enrolled; 100 of them were treated with topical serum (TS) for 30 consecutive days and the other 100 for a single IPL treatment. Facial images, local skin images, and physiological measurements were collected before and after treatment, to assess erythema (CEA), overall facial condition (VAS), and other skin physiology parameters (e.g., pore, skin tone, and sebum). Based on the questionnaire, the treatment willingness and satisfaction of the subjects were collected.

Improvement on erythema, overall facial condition, and skin physiology parameters were observed in two groups. Both subjective assessments and measurements showed greater efficacy in erythema reduction, overall facial condition improvement, and sebum reduction in the IPL group (p < 0.05). Pores and skin tone improvement were comparable in TS and IPL groups. Similarly, subjects with certain erythema improvement in both groups were satisfied with their choice of treatment, in which possible side effects, cost, and duration of the treatment somewhat influence their treatment decisions.

Topical serum that focuses on redness reduction and moisturization and IPL can improve erythema and skin physiological indicators. IPL is more capable of improving the overall facial appearance. By fully understanding the patient's facial condition and treatment influence, medical practitioners determine the appropriate treatment.

ClinicalTrials.gov identifier: ChiCTR2400087665