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All Your Sunscreen Questions, Answered

https://vitals.lifehacker.com/all-your-sunscreen-questions-answered-1827579794

vitals.lifehacker.com

All Your Sunscreen Questions, Answered
Sunscreen is a wonder of technology. It's the closest thing we have to an anti-aging miracle, and it makes the outdoors safe for pale folks like me who would otherwise fry to a bright pink crisp. But we know you have questions about how to use it, and even whether you really need to use it.

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When to Wear Sunscreen

Sunburn happens when you're exposed to a lot of UVB rays from the sun. It only occurs in the middle part of the day in the summer.

When the sun's angle is below 35 degrees, you don't have to ...

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Who Needs Sunscreen

The darker your skin the less likely you are to get sunburn or skin cancer. However, dermatologists recommend using sunscreen anyway.

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Safety of sunscreen

Science has not found any serious threats to your health from using sunscreen.

The chemicals in sunscreen, oxybenzone and octinoxate, are dangerous to coral reefs, which is why Hawaii has ban...

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How Much Sunscreen to Use

Use as much as you can. Be aware that you are probably getting less protection than you think.

  • You can't stay out 15 times longer with SPF 15.
  • High SPF sunscreen helps to make up...

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Sunscreen Sprays

Sprays work, but be aware:

  • You have to make sure you apply enough. Spray until there's a visible sheen, and then you're supposed to rub it in.
  • You probably don’t want to breathe ...

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SPF Moisturizer 

SPF is good to have in moisturizers and cosmetics, but SPF needs to be reapplied throughout the day. It makes separate products a better fit.

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SIMILAR ARTICLES & IDEAS:

Vitamin D and sunshine

Vitamin D is essential for calcium absorption and many other biological processes. Lower levels of Vitamin D increase the rates of almost every disease like cancer, diabetes, osteoporosis, cognitiv...

Vitamin D supplementation

Getting vitamin D through supplementation shows zero benefits. A study over a period of 5 years found supplementing with Vitamin D had no impact on cancer, heart disease, or stroke.

A number of researchers now argue that people with high vitamin D levels are healthy not because of the vitamin, but because they get plenty of exposure to the sun. Vitamin D is just a marker of that fact.

Sunlight is good for you

A dermatologist discovered our skin uses sunlight to make nitric oxide, a molecule in the body that dilates blood vessels and lowers blood pressure.

He exposed volunteers to the equivalent of 30 minutes of summer sunlight without sunscreen. The result? The nitric oxide levels in the volunteers went up, and their blood pressure lowered. Because of the connection of high blood pressure to heart disease and strokes, this discovery can prevent millions of deaths globally.

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The more water you drink, the better

Water is necessary to life and a healthy beverage, but not in excessive quantities.

Your body can give you an indication of how much water it needs. It is better to drink to your thirst.

Getting a base tan can prevent sunburns

Tanning can increase your risk of cancer. Sun damage is the primary cause of wrinkles. 

“Detoxes” work

Your body can detoxify itself, provided you have a healthy liver and kidneys.

Detox diets may even harm you. Juices high in sugar can increase your blood sugar level. A juice fast may also lead to malnourishment.

Drink 8 Glasses of Water a Day

Everyone has a different requirement for water. Temperature, humidity, size, age, gender and activity have an influence on your fluid needs.

Instead, drink when you are thirsty.

Eggs Harm Your Heart

Eggs have a lot of cholesterol compared to other foods. Although cholesterol in the blood is strongly related to heart disease, eating cholesterol is weakly associated with raising the cholesterol levels in your blood.

Eggs have other heart-protecting properties and eating it probably won't harm your heart.

Cancer or Alzheimer’s From Antiperspirant

  • A chain email in the 1990s was responsible for the false belief that antiperspirant was raising the risk of breast cancer. 
  • When researchers found higher ratios of aluminum in the brains of Alzheimer's patients, aluminum in antiperspirant was suspect. But it seems aluminum in antiperspirant is hardly absorbed by your skin.