Wiktionary
nonabrasive
a. not abrasive.
Usage examples of "nonabrasive".
Now I hesitated, long enough to smooth my vehement objections into nonabrasive words.
The effect of a tiny amount of regular royal jelly combined with precipitant molecules of queen mother royal jelly ingested by a human being within the proper biochemical suspension is a safe serotonin booster and nonabrasive stimulant, improving perception and performance in nerve relay.