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Chu et al. Plast Aesthet Res 2020;7:73 I http://dx.doi.org/10.20517/2347-9264.2020.169 Page 5 of 8

Figure 5. Treatment of the rhinion following treatment of the radix

Figure 6. Treatment of the nasal tip

the columellar space can help correct columellar retraction by providing additional support for the nasal
tip. Many injectors prefer injection of the tip prior to treatment of the supratip because the tip has relatively
weaker supporting structures, which makes it difficult to ascertain the final amount of projection that can
be achieved at the desired location [Figure 6].

Overall, general safe injection technique involves injecting below the SMAS plane into the deep fatty layer
and staying midline whenever possible to decrease the likelihood of asymmetries. Consider the use of a
blunt cannula to decrease the chance of vascular complications. When injecting, a two-hand approach is
recommended: one hand is responsible for the action of injecting while the other hand helps to stabilize
and guide the needle into the skin. After injection, light massaging of the area is recommended to help
form a smooth contour. Following the above technique can help achieve safe, reproducible results.