There are several approved injectable products out there. Some may tend to be less painful or potentially more effective than others. They can also be more expensive to use, and, remember, no effective drug is totally without potential side effects. Our answer then, is hypertonic saline. It’s a sterile, hospital grade salt solution. It’s concentrated enough to cause the linings of tiny veins into which it’s injected to swell and slough. This, in turn, produces tiny, invisible micro-scars that simply shut down blood flow through those “Spider veins” forever.