No. Han removes buffs that lasts "x" rounds excluding barrier bonuses.

Healing tips, isn't a buff, is an aura, like wb asuma boost or like anbu special tactics leaching effect, so doesn't get removed by han or similar cleaners.

No. Healing tips isn't removed.

Here's a small list of what is and isn't removed.

Is-Root of Warrior, Mifune's buffs, Killer Bee's buffs and shields, all shields, Konan's buff, Iruka's buff, Tobirama's buff. Maybe Izanagi

Isn't-Healing tips, Kisame's chakra buff, any status conditions (Poison, Ignition, and others.), Barrier buffs, and (I think) buffs like Kimimaro's, Roshi's, Minato's, Sailor Sakura's , and other's damage buffs.

Izanagi gets removed, same goes with Hinata's dodge

Really? His skill description says otherwise. Did they nerf him?

let me try him again tonight. or someone else who has him can try first.

is Han mystery removes pains passive buffs? Like Chikoshudo ninjutsu boost?

Yes.

If the buff says: 'grants for 1/2/3/4/5 rounds effect x' then gets removed. if the buff says: 'as long as the barrier/ninja is on the field you get the effect y' then is not removed.

it would be good if han can remove izanagi lol, it's like survive 1 death in one round