If it was done by a regular plastic surgeon, if there was no infection at that time, the scar would gradually soften after 6 months and harden in the first two months. If the scar is still relatively large and hard after half a year, you can ask for two medicines to soften the scar, which is known to regular plastic surgeons. Don't worry too much, even if no measures are taken, the scar will soften and recover by itself after stopping using it for two years.