Darkened Purple Colour Under Eyes (Hemosiderin?) - Can I Do Juvederm?

Be careful rushing in to having fillers with your recent diagnosis of allergic rhinitis, not because of allergy of the Juvederm, but lower eyelid swelling from the allergies can be accentuated with the filler as it absorbs water.  Allergic rhinitis and or conjunctivitis can cause dark circles too.  The theory of hemosiderin has not been proven and there is no sure way to be certain as to the cause of the coloration. If the filler is injected underneath the muscle layer, you may have less issues with irritating symptoms from the allergies. There are risks with these procedures so speak with your doctor.  Lasers, such as Fraxel and V-beam can help lighten the skin coloration in few, but not all patients.

Yes it is possible to still have Juvederm injections but you must understand that the area under the eye contains a lot of superficial blood vessels.  If the vessels are transmitted by the needle you will likely get bruising, which will then cause more hemosiderin.  Seek out a dermatologist or plastic surgeon who is extremely skilled in injecting the tear trough.  Sometimes delivering the Juvederm through a blunt canula as opposed to a sharp needle will be less traumatic and less likely to worsen hemosiderin.

Ture hemosiderin staining of the tissues in the lower lids is very difficult to treat with lasers of any kind. If you have tear trough deformities a shadow effect may be contributing to your dark circles. If there is a pigment component,  Juvederm may make the pigment worse only if bruising from the injection occurs. A true tear trough deformity with lower eye bags caused by fat is best treated with a fat transopsition. This will lessen the bags and fill the defect below the lid.