Question

How long I can use tri luma?

Answer 1

It depends your skin sensitivity, medical history and perhaps other individual factors that only your dermatologist can assess.

That said, long-term use of hydroquinone (key ingredient of Tri luma) has been associated with ochronosis, a bluish black discoloration of tissue. This complication is relatively rare with short-term use of low-to-medium concentrations. However, prolonged use of high concentration, especially in dark skinned people, appears to cause ochronosis relatively frequently.

See http://www.smartskincare.com/conditions/pigmentation/hyperpigmentation-treatments.html