Overview
the goal of this half-face controlled study is to evaluate the effect of exosome-containing liquid dressings on the recovery of patients after Nd:YAG laser 532 treatment.
Description
The main objective was to collect patients with fleae or seborrheic keratosis after Q-switched laser treatment, and then to use exosomes or matrix on both sides of the face, and finally to evaluate the effect of exosomes on wound healing and prevention of post-inflammatory hyperpigmentation after Nd:YAG laser 532 treatment
Eligibility
Inclusion Criteria:
- It meets the diagnostic criteria of seborrheic keratosis or freckle；
- pepole are able to follow the treatment rules of the study and were followed up for 8 weeks；
- informed consent
Exclusion Criteria:
- History of keloids ;
- Pregnancy or lactation;
- Any cosmetics containing growth factor-related ingredients used within 6 months prior to treatment
- Patients with incomplete observation data and incomplete course of treatment were excluded