Do Nose Reshaping Devices Work? I Am Trying to Correct an Asymmetrical Nose Tip. (photo)

Based on your photo, rhinoplasty surgery may be considered for achieving a narrower and more symetrical nasal tip appearance. I do not believe in magic - it is completely hocus pocus. Caveat emptor! Dr Joseph

Cartilage is resilient and will go back to it's original form right after taking any devices off. The only cartilage shaping device that works is when a baby is born with a deformed ear. Placing a device on the ear for a few months can create a more normal shape. This is when the cartialge is still forming. After babies are 6 months old, even these devices do not work.

An effective means of shaping the nose is surgery or filler rhinoplasty. Devices using pressure from the outside of the nose would not have any affect on the cartilage of the nose, and would probably only cause some bruising or irritation from continuous pressure on the skin. 
As a rule of thumb, if you are considering permanent cosmetic changes to your face (i.e. the shape of your nose, in this case), you should never attempt to make these changes yourself. The risks will always significantly outweigh any rewards, and you could permanently injure yourself or cause irreversible damage to your face. Trust your face to a board-certified facial plastic and reconstructive surgeon.