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Sunblock should refer to a product that blocks UVA and UVB radiation from penetrating the skin... like a shield! A sunblock is a physical filter.
Sunscreen should refer to a product that absorbs into the skin tissue. Ingredients such as oxybenzone and avobenzone absorb into the skin membrane and then also absorb UVA and UVB radiation...like a giant sinking sand pit! A sunscreen is a chemical absorber.
YES... Do not inhale zinc oxide or titanium dioxide as a raw ingredient. If you make this product at home please wear a mask.
Like what you see? Check out our complete Safe Summer Skin Guide available for a free download!
The sun is about 4.6 billion years old...
Fossils suggest anatomically modern humans are about 200 000 years old...
And sunscreen? Younger than my Grandpa! (only 75 years young)
Sunscreen is just a baby in our evolutionary story but many people use it everyday in the summer. We should take the time to learn about its history.
Norman Paul, an Australian dermatologist wrote a book called “the influence of sunlight in the production of skin cancer” linking sun exposure to skin cancer
He recommended Australian’s use sun protection such as veils, clothing, and zinc oxide. He also warned fair skinned Australian’s of reckless exposure to the sunlight.
Unfortunately, Normal Paul was widely ignored in his lifetime. WHY?
We shake our fists at Coco Chanel for being TOO DAMN SEXY and popularizing the tan in 1920.
Coco Chanel went to the south of France and got a burn… and her fans LOVED IT.
STOP. Take a minute with me to understand how this trend shapes our relationship with sunscreen for the next 50 years...
Remember this diagram from the previous post?
REMEMBER: UVB = Burns & UVA = Aging (Tan)
During this era (a time when the tan was most desirable) it is important to understand the market is striving to make a product to promote a tan and protect against a burn.
Therefore sunscreens during this time period were ONLY made to protect you from UVB radiation.
1928. Chemical UVB absorbers hit the seen
1936. L’Oreal releases the first commercial sunscreen.
1946. Bikini is introduced
1948. General Electric releases the first sun lamp for home use. “Get that golden summer tan look! GE tan lamp tans like sun”
1950. Metal reflector released
1953. Little Miss Coppertone Debuts.
1978. Tanning Beds released
An Anthropologists perspective:
Traditionally UVB radiation hits the top layer of our skin, as a result we burn and get out of the sun preventing us from further damage deeper into the tissue.
Burning could be our evolutionary mechanism to reduce our level of UVA exposure.
Sunscreen originally developed to prolong our sun exposure and reduce our ability to burn. We essentially created a product to remove our evolutionary mechanism telling us to GET OUT OF THE SUN.
After 40 years of cooking in the sun, skin cancer is on the rise. The FDA announces that over exposure to sun may lead to early aging and skin cancer. (A notion originally suggested by late Norman Paul)
Now, there is a market push for a sunscreen product that protects for BOTH UVB and UVA radiation.
1970. Teen cancer rate increasing by 2%/ year (USA)
1972. The FDA made sunscreen an over the counter drug rather than a cosmetic cream. (Now regulated)
1974. SPF (sun protecting factor) is accepted for labeling on sunscreen products
1978. The first SPF 15 lotion is released into the market
1980. Studies are showing that UVA radiation is also considered dangerous and could increase the risk of skin cancer.
1981. Coppertone announces the first UVA chemical absorber – oxybenzone (now the most widely used sunscreen ingredient in over 1500 brands)
Stay tuned… next time we will dive into the Science of the ingredients.
Sunscreen. I heard that sh**t was flammable?
But, if you don't use it you're at risk of getting skin cancer...
What a dilemma.
Is it to reduce your risk of skin cancer?
Skin cancer rates are going up exponentially?
Skin cancer is the most common cancer accounting for 1/3 new cases in Canada. It is predicted that 1/73 women and 1/59 men will deal with skin cancer in their lifetime.
The first two, “the carcinomas” are less dangerous. They progress slowly, and are hopefully caught and surgically removed.
The melanoma (I like to think meanie) accounts for 5% of skin cancer cases. It is more serious and can be fatal.
UVA radiation (longer wavelengths) is associated with aging and melanoma.
UVA radiation (longer wavelengths) is used in tanning beds. Using tanning beds before the age of 30 increases your risk of skin cancer by 75%.
UVB radiation (shorter wavelengths) is associated with sunburns. It is also associated with basal and squamous cell carcinoma. (Skin cancer at the top skin tissue)
UVC radiation (not pictured) has the shortest wavelengths and does not reach the earths surface.
It is a term used to imply UVA and UVB protection, however It is NOT regulated and is a form of marketing.
Unfortunately, there are no rainbows in your sunscreen.