Personally, I, highly doubt that there exists even a single shred of evidence to show that vaping (that is, without smoking...) a normal dose of nicotine has caused significantly more severe or uglier-looking scars after a wound to the skin heals, or that it slows the healing process of a wound to the skin.
That said, I have treated my own scars with doTERRA copaiba oil, which is an essential oil that can be used not only for aroma-therapy, but also for some other forms of treatment, one of which is to apply it onto the skin in small dosages after diluting it first, whilst taking care to avoid some specific areas of the body, like, don't rub it onto your ears, and also avoid rubbing it onto the actual scar tissue itself. Because, if you rub it
around the scar instead, then the scar will fade in a nice and evenly fashion so, then, during the healing process, the scar won't start to look a bit weird until it finally will have faded. (Don't use this oil for vaping... don't vape any oils.)
I remember I was skeptical when I bought this copaiba oil. I use it internally because it also helps against inflammation and it greatly helps to relieve the stress, the fatigue, and the discomfort, similar to how CBD also can help against that, but I soon found that expensive strong quality CBD was less potent, less effective for me when compared to this copaiba oil. I didn't try this copaiba oil onto my skin until some time after I found that out, but once again this copaiba oil worked because it healed up my scars I got from leaving a rash on my skin go untreated for a month or two.
Copaiba Oil | dōTERRA Essential Oils
Copaiba Oil | dōTERRA Essential Oils