Since personal lubricants are not ingested and are inedible, they do not require certification. You may use Astroglide on Passover.
Flavored lubricants should be avoided even if there is no intention to ingest them.
For information about the use of lubricants on Shabbat and Yom Tov, please see
Lubricant on Shabbat (the halachot of Shabbat also apply to Yom Tov).
Chag Kasher VSameach!