#24 While using oil in a lock would work, the oil will collect crud and dry out over time. The proper thing to use for locks is graphite lubricant. Arbitrary example from Amazon: https://www.amazon.com/Panef-Corp-Powdered-Graphite-Lubricant/dp/B0016GZQ60
"Spending a bit of time understanding your plungers can be useful, though, because different plungers are used for different problems. A flat plunger is fine for a sink, but if you need to use one on your toilet you’ll need one with a tapered end."
#24 While using oil in a lock would work, the oil will collect crud and dry out over time. The proper thing to use for locks is graphite lubricant. Arbitrary example from Amazon: https://www.amazon.com/Panef-Corp-Powdered-Graphite-Lubricant/dp/B0016GZQ60
https://www.amazon.com/Panef-Corp-Powdered-Graphite-Lubricant/dp/B0016GZQ60
Now I don't use hairpins but I would think the side WITHOUT the sharp pointed end would be better against your scalp?