Is dermaroller treatment for acne scars permanent? And can I go out and do my works as usual after doing dermaroller treatment?

Thank you for your question. Derma roller is very good for acne scars as it can improve the texture and the appearance. The length of the needle all depends on what reaction you will have. Derma roller should be from .5-1.0 in length. With home derma rollers all you should experience is redness but this should return to normal after about 1 hour post rollering. Hope this helps.