Suggest Ways To Remove Stitch Marks On Nose Post Accident

hi doctor its manisha age 24 and weight 54 sirbefore 2 years i met with an accident i got serious injury on my nose also i got stiches on my nose tip doctor suggests me to take laser to lighten the stiches mark before 15 days i had gone through laser treatment but it seem no changes in mark please suggest me that what can i do now...