Bonus dose

[Flowers1985]

Are these what I need?

They are a bit on the big side, you can get thinner. Here are some options.

Hack the pen, same needle.
www.reddit.com/r/MenOnThePen/s/zPlckXaOzu

Or a 4mm needle.
ukmedi.co.uk/products/32g-pink-4mm-meso-relle-mesotherapy-needle-meso-relle-am324-ukmedi-co-uk

ukmedi.co.uk/products/1ml-bd-plastipak-luer-slip-syringe-bd-303172-ukmedi-co-uk

Or 8mm needle all in one.
ukmedi.co.uk/products/fms-micro-syringe-32g-8mm-1ml-fms-fms-32g-10ml-ukmedi-co-uk