I ditto Mach above, but one thing I’d add.
There are a couple of lip plumpers that work differently to the irritants or glosses. Palmitoyl 3 and another peptide I can’t remember the name of. Avon has it in their plumping lip conditioner called Beyond Colour.
To see results you need to give it 6 weeks and apply it several times a day Minimum of 3 times. I’ve been using that Avon product for a while now—since it came out 2 or3 years ago and it really does work.
That said, I looked up the ingredienctts in my favourite Elizabeth Arden lipsticks and found out they have some in there too, so I’m getting it maybe 5 or 6 times a day.
I think anytime you irritate the skin, you cause damage down the road. The peptides stimulate collagen production and are a very new thing on the market.