Laser therapy works better for patients who have common bluish, purplish, or reddish spider veins, or reticular veins. Those greenish or bluish veins that form deeper in the skin but are still visible near the skin surface. Also, if your veins are genetic or cause an aesthetic problem like venous lakes or rosacea, you may benefit greatly from laser spider vein treatments. On the other hand, if you are pregnant, diabetic, take a blood thinner, use acne medicine, have blood clots, or you have a tattoo on the area, Laser therapy is not the best treatment choice for you.