Ok, Im not sure if this will help, but this is my experience.
When I SHed back in the day, my parents noticed the scars. They were all over my right hand and relatively visible. The problem is, when they noticed, they were enraged. Threatened me to leave me in a mental hospital because they didnt raise a psycho and threatning to send me away to another family. They took the blades and got me grounded for a month for both
PC and going out. Then my sister found out and nearly "disbrothered me". She said if I continue she will stop talking to me (not that we talked before that really) and that she will tell all of my friends what I did so they hate me too. Thats when the connection with my family broke. Now were just strangers living in the same house.
But yeah... xD If i could i could go back and not
SH or do SOMETHING to prevent them seeing the scars but fuck it life is a bitch...
So yeah...
My parents are usually somewhat supportive but when they saw the scars all hell broke loose.
If you think your parents are supportive go ahead. If you dont... Agh, I wouldnt recommend it. I wouldnt want anyone to have the shit i had and for it to affect them...