How bad is it to send an undesirable ACT/SAT score early?

I sent my ACT score early in winter of my junior year because it’s free and i thought college will ignore this score when i send a higher score later on. But it looks like sending a low score early will have a negative impact even I send a high score later on. Is that true? If so is there any way to minimize the damage caused by this score?

Get a higher score and send it!