Could sclerotherapy help me? Have tried laser for 3 years for telangiectasia on my nose and chin. (photo)

It is difficult to see the veins discretely on the picture you posted. If the telangiectasias are big enough to inject with a tiny 32 gauge needle, sclerotherapy may help.  I find that 72% Glycerin in a  2 to 1 ratio with 1% lidocaine and epinephrine works well.  Again; however, the veins have to be big enough to place the bevel of the needle inside the vein. In some cases telangiectasias are so tiny that injecting them is impossible, injecting around them would not work. If you haven't had success with laser, consider asking your treating physician or get another opinion from a vein specialist. Best of luck.

The pictures veins are too small for sclerotherapy.  Topical laser, IPL, micorneedle RF and Vein Gogh can all work on these kinds of veins.  If the laser that you used did not work then an alternative should be tried.