Part I – Genetic Disposition
Part II – Reaction to sun exposure
Skin Type I
Skin Photo Type I tans little or not at all, burns easily and severely, and then peels.
Individuals with Skin Photo Type I do not have the ability to create natural protection from ultraviolet exposure, and are particularly susceptible to burning and damage from UV radiation.
Skin Type II
Skin Photo Type II usually burns easily and severely (painful burn), and tans minimally and lightly. Individuals with Skin Photo Type II are not recommended to use a tanning unit.
Skin Photo Type III burns moderately, and usually develops an average tan
Skin Type IV
Skin Type IV burns minimally, tans easily with each exposure and exhibits immediate pigment darkening.
Skin Type V
Skin Type V rarely burns, tans easily and substantially, and always exhibits immediate pigment darkening
Skin Type VI
Skin Type VI, tans easily, never burns and exhibits immediate pigment darkening.
From the Skin Cancer Foundation
You are susceptible to skin damage as well as cancers like basal cell carcinoma and squamous cell carcinoma. You are also at high risk for melanoma, the deadliest type of skin cancer. Generally follow The Skin Cancer Foundation’s prevention tips but also consider using a sunscreen with a SPF of 30+ and clothing with a UPF rating of 30 or higher. Seek the shade whenever you are out in the sun. Check your skin head-to-toe each month, paying careful attention to any suspicious growths, and make sure you have an annual professional skin checkup.
Fitzpatrick V and VI
Acral lentiginous melanoma, a very virulent form of melanoma, is more common among darker-skinned people. These melanomas tend to appear on parts of the body not often exposed to the sun, and often remain undetected until after the cancer has spread. Check your skin head-to-toe each month, paying careful attention to any suspicious growths, and make sure you have an annual professional skin checkup. Keep an eye out for any suspicious growths, especially on the palms, soles of the feet and mucous membranes.
What About Getting Proper Vitamin D Production From the Sun Though?!
According to the United States National Library of Medicine (NLM), a branch of the National Institutes of Health; “For most white people, a half-hour in the summer sun in a bathing suit can initiate the release of 50,000 IU (1.25 mg) vitamin D into the circulation within 24 hours of exposure; this same amount of exposure yields 20,000–30,000 IU in tanned individuals and 8,000–10,000 IU in dark-skinned people.”
It is currently debated though there is accumulating medical evidence, that sun exposure is a very important aspect of our health in multiple aspects. Some professionals recommend an half hour of sun exposure every day. As well, dark-skinned people do need more sun exposure than light-skinned people.