A Comparative In Vivo Study on Three Treatment Approaches to Applying Topical Botulinum Toxin A for Crow’s Feet

Figure 7

Representative clinical photographs of nanomicroneedles group (crow’s feet dynamic wrinkles): (a) baseline, (b) 1 week after treatment, (c) 4 weeks after treatment, and (d) 12 weeks after treatment.

(a)

(b)

(c)

(d)