freckles
Conditions
Interventions
The group of picosecond laser treatment :The picosecond laser
Sponsors
West China Hospital, Sichuan University
Eligibility
Sex/Gender
All
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: 1) Age 18~65 years old, gender is not limited 2) Fitzpatrick's skin type was type III and type IV 3) Fitzpatrick was clinically diagnosed with freckles by two senior dermatologists
Exclusion criteria
Exclusion criteria: 1) Patients who have taken photosensitizer food and drugs in the past 1 month 2) Patients who have been exposed to the sun in the past 1 month 3) Patients with melasma, brown cyan nevus, age spots and other pigmented spots 4) Patients with blood system, immune system and other serious systemic diseases 5) Pregnant or lactating women 6) Cicatricial constitution and vitiligo
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Melanin index;texture;pore;L*a*b*; | — |
Secondary
| Measure | Time frame |
|---|---|
| Erythema index;TEWL;Hydration ;Depressions;Elevations; | — |
Countries
China
Contacts
Public ContactYing Wang
West China Hospital, Sichuan University
Outcome results
None listed