I have no idea if you guys would know this, but I have been wondering about this for forever. I have a dragon with skin (no scales) and he has scars. What color would the scars be? Would they be pinkish or a lighter color of his skin?
first, a brief rundown on wound healing and scars:
Wound healing is a complex process that involves four main phases: hemostasis, inflammation, proliferation, and tissue remodeling. Hemostasis simply means a blood clot forms to stop the flow of blood. Inflammation occurs due to blood vessel dilation and the accumulation of nutrients and cells that work to repair the damaged tissue. Proliferation means that the cells around the wound begin to multiply in order to form the new tissue that will seal the wound. Lastly, tissue remodeling involves production of a protein called collagen to support the new tissue. Scars are formed during this final stage of wound healing.
and one more on the dermis:
On your skin you have a special layer located below the epidermis called the dermis. The dermis is perhaps the skin’s most important layer, as it contains blood capillaries, sweat glands, hair follicles, and other important structures. While this layer is very powerful, it can also be fragile and easily torn. When the dermis is torn apart from the epidermis, that’s when scars are formed.
so scar appearance in general seems to vary depending on:
type of injury and how it initially affected the flesh (clean surgical incision, ragged gash, skin-melting burn, etc.)
the severity of the initial wound (length/width, depth and how many layers of skin/flesh were affected, etc.)
where the scar is located and how that location affects the healing process (areas of flexion may crease and stretch scars, skin has different stretch/softness depending on body location, etc.)
individual factors in skin resilience (skin tone, genetics, age, hormones, etc.)
how the wound was treated throughout the healing process (stitches, proper cleaning, sun/UV exposure, etc.)
age of the scar itself (a freshly-healed scar will not appear the same as a long-matured scar)
all these factors will affect everything about a scar, from depth to color
like before I even touch color, note that scar depth will drastically change the appearance of a scar. scars can range in depth from sunken/pitted to raised, due to varying collagen production (too much collagen leads to raised scars), or collagen damage. and this site lists even more types of scars, based on the various factors I’ve already discussed
so keep that all in mind when I say that scar color can be pretty unpredictable, from person to person, and scar to scar. so, yes, scars can be hypopigmented (lighter than the surrounding skin) due to loss of skin pigment during the initial wound and healing process. the scar may even appear white, depending on how light the skin is, and/or how much pigmentation was lost during the scarring process. but scars can *also* be darker than the surrounding skin instead. this is most common in newer scars that are still healing, causing a darker red/purple scar appearance due purely to extra blood flow rather than pigmentation. but some scars end up just staying that way, especially common in raised scars like keloids. some scars may also develop more melanin if they’re exposed to a lot of sun during the healing process, thus becoming hyperpigmented (darker than the surrounding skin)
to be clear, I’m aware that most of the sites I linked are to plastic surgery offices or scar cream sellers. I don’t want to push the agenda that scars need to be “fixed”-- to be clear, as long as they aren’t causing pain/discomfort, they don’t, and it’s up to the individual to decide if they want to either embrace or change the appearance of their scars. but these sites seem to have some of the most useful information on scar types/formation, so take that as you will