Tripeptide/Hexapeptide Serum with 1540 nm Laser Improves Striae Distensae and Reduces Hyperpigmentation

Striae distensae (stretch marks) are a common dermatological concern associated with significant negative psychosocial effects. While non-ablative fractional lasers (NAFL) like the 1540 nm laser have shown improvements, their efficacy can be limited, and they often carry a risk of post-inflammatory hyperpigmentation (PIH), especially in individuals with darker skin tones. Topical peptides are recognized for their roles in cutaneous rejuvenation, promoting collagen and elastin synthesis, but their synergistic potential with laser therapy for striae has not been thoroughly investigated. This study addresses the need for enhanced treatment outcomes and reduced side effects in striae management.

This pilot study evaluated the efficacy and safety of a peri-procedural tripeptide/hexapeptide serum as an adjunct to 1540 nm nonablative fractional laser treatment for striae distensae. The study enrolled 10 patients who received the combination therapy. The serum was applied topically around the laser sessions. Primary endpoints included subjective patient improvement, objective improvement assessed by clinicians, and the incidence of post-inflammatory hyperpigmentation. Patient satisfaction was also a key outcome measure, aiming to assess the overall benefit of adding the peptide serum to the established laser protocol.

All 10 patients participating in the study reported subjective improvement in their striae distensae following the combination therapy. The addition of the tripeptide/hexapeptide serum significantly increased the objective improvement observed by clinicians, suggesting a synergistic effect with the 1540 nm nonablative fractional laser. This enhanced objective improvement indicates a more pronounced physical change in the appearance of the stretch marks. Crucially, the combination approach also demonstrated a notable safety benefit.

The study found that the addition of the tripeptide/hexapeptide serum notably reduced the incidence of post-inflammatory hyperpigmentation, a common adverse effect associated with laser treatments, particularly in susceptible skin types. Furthermore, patient satisfaction was increased with the combined therapeutic strategy, highlighting the perceived benefits of the serum. While specific quantitative metrics for improvement were not detailed in the abstract, the consistent qualitative findings across all participants underscore the positive impact of the peptide serum.