Efficacy and safety of a novel 785 nm picosecond neodymium-doped yttrium aluminum garnet laser for the treatment of facial benign pigmented lesions in Asian skin: a pilot study

Figures & data

Table 1. Demographic characteristics of the participants.

Characteristics	n (%)
Sex
Male	0 (0)
Female	15 (100)
Age (years)
18–39	0 (0)
40–49	8 (53.3)
50–59	3 (20.0)
60–64	4 (26.7)
Mean ± standard deviation	51.2 ± 9.21
Fitzpatrick skin type
I	0 (0)
II	2 (13.3)
III	12 (80.0)
IV	1 (6.67)
V	0 (0)

Figure 1. (A, B, C). Clinical photographs of three representative cases showing significant improvements in pigmentary lesions after four treatment sessions with the 785 nm picosecond Nd:YAG laser.

Figure 2. Evaluation of the effects of 785 nm picosecond Nd:YAG laser treatment on the (A) skin melanin index, (B) erythema index, and (C) brown index at weeks 1, 2, 3, 4, and 8 (*p < 0.05, **p < 0.01, and ***p < 0.001 by repeated measures ANOVA and post hoc Bonferroni correction).

Table 2. Satisfaction of the participants.

	Number (%)
Grade	Week 1	Week 2	Week 3	Week 4	Week 8
5, Much improved	9 (60)	11 (73)	11 (73)	11 (73)	12
4, Improved	2 (13)	2 (13)	3	1 (7)	1 (7)
3, No change	2 (13)	1 (7)	0 (0)	2 (13)	2 (13)
2, Worse	2 (13)	1 (7)	0 (0)	0 (0)	0 (0)
1, Much worse	0 (0)	0 (0)	1 (7)	1 (7)	0 (0)
Total	15 (100)

Data availability statement

The data that support the findings of this study are available from the corresponding author, PKY, upon reasonable request.