TABLE 1.

Baseline characteristics of both groups.

Characteristic	Study group (n = 42)	Control group (n = 42)
Age (years, x̄±s)	43.8 ± 9.4	44.5 ± 8.7
Female, n (%)	35 (83.3%)	36 (85.7%)
BMI (kg/m2, x̄±s)	22.6 ± 2.8	22.9 ± 3.1
Fitzpatrick phototype III/IV, n (%)	38 (90.5%)	39 (92.9%)
Baseline R2 (%)	0.62 ± 0.08	0.61 ± 0.09
Prior cosmetic treatment, n (%)	0 (0%)	0 (0%)

All between-group comparisons P > 0.05 (independent samples t-test or chi-square test, as appropriate). Baseline skin laxity severity, comorbidity burden, and medication history also showed no significant between-group differences (data not shown).