Can cheek hollowing actually occur after Ulthera treatment?

I am considering an Ultherapy lifting procedure because my skin elasticity has decreased due to aging.

However, after looking around, I am worried because I heard that 'cheek hollowing' can occur after Ulthera.

Cheek hollowing is a phenomenon where the cheeks appear sunken or the facial contours look different.

I wonder if these side effects are actually common.

Although Ulthera is known to provide a lifting effect by stimulating the deep layers of the skin with ultrasound,

I am worried that these symptoms might be appearing more easily as I get older because my skin's ability to recover decreases.

Also, I hear that the intensity or method of the procedure varies from hospital to hospital,

I would like to know if the occurrence of side effects may also vary accordingly.