Titan absolutely does work but only in the right hands as it is extremely technique driven. Make sure the professional performing the treatment is experienced. Patient selection is also very important, as it is for all procedures. Inquire about 3D treatments as well as results from 3D are...
Cutera's laser device offers TITAN as a light energy option to heat the deep dermis to provide skin tightening. Titan provides a uniform distribution of energy for heating better than other RF (radio-frequency) devices. Since it treats deep dermal tissue, all skin types can be safely treated...
The best option for you would be laser liposuction (Smartlipo). You would be able to remove the submental fat as well as tighten the overlying skin. Another treatment option for your double chin would be Kybella but you would need several treatments and multiple vials...