My door lock needs care, the key is hard to put in.

I've got this in my previous apartment and I got some 'magic cream' from a friend which worked like a charm, but unfortunately, I don't have this anymore and I haven't noted what was this.

What kind of lubricant works fine for door locks? I don't want to get it stuck more.

  • 1
    Graphite power usually works well, does not drip like oils. If key is hard to put in, instead of turning, might be damage to the lock or key.
    – crip659
    Jan 9, 2022 at 17:54
  • 1
    silicone spray applied to the key works well
    – jsotola
    Jan 9, 2022 at 18:28
  • I use WD-40 or a similar product. You don't need much. Just spray a little on the key and insert it into the lock, and turn it repeatedly. Jan 9, 2022 at 21:00
  • 2
    Oil holds onto dust, causing future problems. A drop on the key itself might not be too bad, but not in the lock. As @crip659 states, use graphite or powdered PTFE. Jan 9, 2022 at 23:39
  • Stay with dry material like graphite or moly sulfide . Oct 11, 2022 at 16:27

1 Answer 1


In addition to graphite powder, other lubricants for door lock mechanisms include silicone lube, grease lubrication, and Teflon-based lube. A penetrating liquid like WD-40 or white lithium grease is another option. Consider the local weather conditions before selecting a suitable lubricant.

  • 2
    I wouldn't put any grease or oil in a door lock mechanism. It'll just make a mess, including on the key, which you then put in your pocket or purse. Also, how many questions are you going to copy/paste this answer to?
    – FreeMan
    Oct 11, 2022 at 13:46

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