It’s been 3 weeks since my Mohs surgery, and I’m becoming addicted to this little tube of silicone gel that my plastic surgeon gave me to use.
“Apply this 2-3 times a day to prevent scarring and redness” he said, uncapping the tube, smearing it’s contents on my newly-healed Moh’s incision and then gently rubbing it in. “Rub it in, pressing down to the bone. Let it dry, then you can apply make-up over it.”
As I left, his nurse commented – “Ah – I see you got “The Tube”. He loves that tube!”
It’s pretty cool that I can actually do myself to help the healing process along. It’s also oddly comforting to stroke my scar and feel the silicone covering on it. But the other night, as I applied the silicone gel, I found myself curious as to how this stuff worked. Was it just a little plastic surgery witchcraft or was it really doing something to prevent scarring and redness? So I headed to Pub-Med and did a little reading.
What I found was that this stuff really does work. Numerous controlled trials have shown that silicone sheeting treats hypertrophic scars or keloids and prevents such scars in the first place if used prophylactically. There is less data on silicone in other forms, such as gels and creams, but several studies suggest that they work as well as the sheets. My tube is just one of many brands of silicone products that now sell over the counter. I don’t know if there’s a difference between brands, thought I suspect they are probably all the same.
How do silicone sheeting and gels work to prevent scars?
No one knows for sure, but here is the current thinking – When a wound heals, the new skin that is made is immature and not as good an osmotic barrier as older skin. Thus, water is lost from the deeper layers of the skin. It is theorized that water loss from the stratum corneum leads to production of cytokines, which in turn increases the amount of collagen laid down by the fibroblasts there. (Collagen is the stuff of which scars are made.)
Silicone sheets and gels are thought to create an osmotic barrier that prevents evaporative loss of water from the wound, thus leading to decreased collagen and scar formation. Silicone sheets are the most studied, but are harder to use on the face where visibility is a problem and on joints where movement dislodges them. Silicone gels have the advantage of being easy to use, and the gel dries nicely to create a countered covering. Some specialists recommend using the sheets at night and the gels during the day.
Can’t I just Use Vaseline?
Nope. Apparently, Vaseline does not work to prevent scar formation. Nor do plastic sheets and other occlusive dressings. There is something about the osmotic barrier in silicone sheets and gels that makes it “just right” for the job. That something may not be the actual silicone itself, but the vehicle or matrix that it forms. Indeed, more recent studies using some non-silicone gels have shown similar efficacy to silicone, suggesting that the gel’s the thing.
What about steroid injections?
The other well-proven treatment for hypertrophic scars is steroid injections. But steroid injections are used on already formed scars, as opposed to silicone gel, which can be used to prevent scarring.
How about the rubbing?
The rubbing that I am doing is also helping my wound heal prettily by preventing the formation of collagen bands in the scar.
This young girl, whose parents have a wonderful site showing the evolution of her cleft lip and palate from birth through repair to age 10, rubbed cocoa butter on her scar. She looks great – a testimony to the use of pressure and rubbing (or 10 year old skin…)
Comments? Corrections?
This is my own little foray into a completely different field of medicine from that for which I was trained, so I hope that I have not made any glaring errors. I would love to know what my plastic surgery colleagues think about this topic (RL?). I don’t know, for instance, if one brand or type of gel is better than another, or what one should look for in a gel to be sure it will work.
That’s it? No shocking photos of scar tattoos?
Oh, all right – here. Just don’t say I didn’t warn you.
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