A former meth addict has told a NSW inquiry the criminal histories of rehabilitated users should be erased because such records left them unemployable and at risk of relapse.

On the second day of hearings at the special commission of inquiry into the drug ice, 50-year-old Nicky Tillier said criminal histories could be misleading and recovered users deserved a "fresh start".

Nicky Tillier, who gave evidence about her journey through addiction with methamphetamine. Credit:AAP

"When you look at my criminal history it shows I’ve been charged with larceny and the possession of a weapon and when HR looks at it they won’t hire me," Ms Tillier, who now works at rehab service Odyssey House, said.

"But it gives no context, it doesn’t show the larceny was me stealing a $10 Kmart skirt for my daughter and the weapon was a butter knife [to cut up drugs]."