How To Choose The Best SPF (Sun Protection Factor)

You know that you should use some form of sunscreen every day, right? Even during those colder winter month, sunscreen is vital to your skin’s health. But, how do you choose from all of those SPFs on the market? Is one sunscreen better than another? How do you know which one to select? This article will help to clear up that SPF confusion.

What Is SPF?

Quite literally, SPF stands for “Sun Protection Factor.” In every instance, the higher the SPF number, the more protection you will receive against the sun’s UVB rays. While this information might be old news to you, did you know that the SPF number also indicates the amount of time that you can safely stay out in the sun?

For example, if you happen to be a person with sun sensitive skin, a SPF of 15 will allow you to safely remain outside for 15 times longer than they normally would. This logic can be applied to any SPF number out there.

The Higher the Better?

So, now the question is: what number should you be looking for? Well, most skincare experts tend to recommend a SPF that’s between 15-30. Any SPF number that’s higher than 30 generally doesn’t provide much more protection.

However, if you have extremely fair skin, you may want to seek an SPF or 15-30. This tiny bit of extra SPF may protect those with fair skin better than a lower number would. Even if you have dark skin, you should still wear sunscreen. Dark skin can burn just as easily as light skin can.

Powder, Liquid, or Spray?

Is there a difference between all of the powders, liquids, and sprays on the market? Is one type of sunscreen better than another? Generally, all types of sunscreen have been designed for mass use. Thus, the most important thing is to look at that SPF number.

However, you should also read sunscreen ingredients. If you use a sunscreen that’s integrated into another product (moisturizer or foundation), be careful about the ingredients included in that product. Some of these products may actually harm your skin.

Best Sunscreens

The best way to choose a sunscreen is to select one that is made from organic ingredients. These sunscreens do not contain a large amount of toxic chemicals. Instead, they are often composed of natural ingredients.

If you happen to have sensitive skin, choose a sunscreen that won’t make your skin break out. Likewise, if you intend to swim or sweat while wearing sunscreen, make sure to select a waterproof version.

Enjoy the Sun

The sun can be a welcomed thing. Sunshine feels great on skin, it gives us a boost of Vitamin D when we need it, and it has the ability to invoke positive feelings. In short, don’t avoid the sun completely.

Still, make sure that you wear a proper SPF every single time you venture outside – no matter what the season might be. This way, you can enjoy the sun without worrying about your skin.

SPF, UVB and UVA Protection Explained

Try this quiz:

• Is SPF 45 sunscreen three times stronger than SPF 15 sunscreen? Does it last three times longer?
• Do sunscreens provide better UVA protection than UVB protection?
• What works better, sunscreens or sunblocks?
• Do “broad-spectrum” sunscreens protect against all UV rays?

If you’re not certain of the answers, join the club. Recent research shows that people who buy sunscreens aren’t sure exactly what protection they offer, and are cloudy about the technical terms on their labels. A survey of 235 women who bought sunscreen found they did not know the difference between UVA and UVB or between SPF and UVA. They mistakenly believed that higher SPF ratings meant stronger UV protection, not longer protection, and the concept of “broad-spectrum” protection confused them further.

The U.S. Food and Drug Administration is urging sunscreen manufacturers to clarify the claims made on their products so that the public can make more informed purchases. In the meantime, we’d like to do our part. Here, from medical experts on The Skin Cancer Foundation’s Photobiology Committee, is a concise primer on the ABC’s of sunscreen protection:

UVA (ultraviolet-A): long- wave solar rays of 320-400 nanometers (billionths of a meter). Although less likely than UVB to cause sunburn, UVA penetrates the skin more deeply, and is considered the chief culprit behind wrinkling, leathering, and other aspects of “photoaging.” The latest studies show that UVA not only increases UVB ’s cancer-causing effects, but may directly cause some skin cancers, including melanomas.

UVB (ultraviolet-B): short-wave solar rays of 290-320 nanometers. More potent than UVA in producing sunburn, these rays are considered the main cause of basal and squamous cell carcinomas as well as a significant cause of melanoma.

Sunblocks and sunscreens: Sunscreens chemically absorb UV rays, sunblocks physically deflect them. Sunscreen has long blocked UVB effectively, but until recently provided less UVA protection. New ingredients such as octylcrylene and the benzophenones have improved sunscreen’s defenses against shorter UVA rays, and the revolutionary chemical avobenzone (Parsol 1789) works against all UVA wavelengths.

Sunblocks have also markedly improved. New preparations such as micronized titanium dioxide are less conspicuous on the skin and offer substantial protection against both UVA and UVB.

SPF (sun protection factor): measures the length of time a product protects against skin reddening from UVB, compared to how long the skin takes to redden without protection. If it takes 20 minutes without protection to begin reddening, using an SPF 15 sunscreen theoretically prevents reddening 15 times longer — about 5 hours. (Actually, it may take up to 24 hours after sun exposure for redness to become visible.) To maintain the SPF, reapply sunscreen every two hours and right after swimming.

The Skin Cancer Foundation recommends SPF’s of at least 15, which block 93 percent of UVB. While SPF’s higher than 30 block only 4 percent more UVB, they may be advisable for sun-sensitive individuals, skin cancer patients, and people at high risk of developing skin cancer. They also allow some margin for error if too little sunscreen is applied.

While SPF is the universal measurement of UVB protection, no comparable standard exists for UVA. Scientists worldwide are working to develop a standardized testing and certification method to measure UVA protection.

Broad-spectrum protection: The phrase indicates that a product shields against UVA as well as UVB. It does not guarantee protection against all UVA wavelengths, however. Most broad-spectrum sunscreens and sunblocks with an SPF of 15 or higher do a good job against UVB and short UVA rays; if they also contain avobenzone, zinc oxide, or titanium dioxide, they should be effective against the entire UVA spectrum.

Even with the ideal sunscreen, some UV rays can get through to your skin and cause damage. The Skin Cancer Foundation considers sunscreen one part of a comprehensive sun protection program, along with sun-protective clothing, sunglasses, shade, and sun avoidance from 10A.M. to 4 PM.

Protection Daily from Sun Exposure for Healthy and Safe Skin

Some experts claim over half of sun damage occurs during our every day activities – walking to the car, going in and out of buildings, walking along the street shopping, and so on – not while we’re sunbathing. Unfortunately, this means we should to wear sunscreen just about every time we leave the house. Most sunscreens are fairly toxic and organic sun care is blooming. More products are becoming available that are organic, natural and eliminate harmful toxins. This is great news for all of us especially our younger ones and babies.

Remeber organic sunblock is only one step you can take to protect yourself from the sun. Covering up can be just as important as the type of skin care or sun care product you use. The clothes we would prefer on a warm summer day – lightweight, light-colored clothing made with loosely-woven fabric – do not offer much protection. That’s why kids who swim with T-shirts over their bathing suit still get burned.

To completely block UV rays you need clothing with a ultraviolet protection factor (UPF) of about 1700. A white T-shirt has a UPF of seven. The same T-shirt in green has a UPF of 10. A dark, thick fabric like velvet comes in at about 50. To reach 1700 you’d need a long-sleeved dark denim shirt. Not exactly anyone’s idea of fun in the sun.

The long and short of it is that while we may be willing and able to cover up with high UPF clothing in some circumstances, there’s no way that’s going to fly at the beach. So, you’re going to have to resort to sunscreen, and, to be safe, you’re going to need a skin care product that protects you from the sunscreen’s dangerous chemical ingredients.

How do you do that? Your first line of defense is natural sunscreen – check your local health food store. However, not all these products are completely toxic free so you’ll still some additional protection. Your best bet for that is a shielding lotion: A good shielding lotion bonds with the outer layer of the skin to form a new protective layer that keeps out chemicals. It also locks in natural moisture – another thing you have to be concerned with when you’re out in the sun: sunburn equals dehydration.

Summer sun care can be complex but remeber its sunlight is good. Try to use organic sunscreen, appropriate clothing, and a natural after sun lotion. These natural skin care products can help you enjoy your summer without concern for your health.

Sun Protection and Sun Burn FAQ

1. “How Much Sunscreen Should I Apply?”

The average user of sunscreen tends to use significantly less sunscreen than the amount required to achieve the SPF listed on the container.

2. “How Often Should I Apply Sunscreen When I’m Out In The Sun?”

Many experts recommend that frequent application during sun exposure is required. However, a group of children were tested by spreading on 1 application of sunscreen to one side of their bodies, and four applications to the other.

They then spent 6 hours in the sun. One application provided the same level of protection as four applications, confirming the adequacy of a single daily application of a sunscreen in that situation.

3. “How Long Before Sun Exposure Should I Apply Sunscreen To My Skin?”

As molecules of sunscreen are present in their active state in the sunscreen, sunscreens work immediately upon application. The only reason for application early is to allow absorption into the skin so that the sunscreen is less likely to be washed off, should the person be entering the water. Even so, modern sunscreens are quite resistant to removal from the skin.

4. “Sun Protection Factor (SPF) – What Is It?”

SPF is the ratio of the minimal ultraviolet dose required to produce redness with and without a sunscreen. For example, if it took ½ hour for your skin to become sunburned without any sunscreen, then for a sunscreen that has a 15 SPF rating, you could stay in the sun for 15 times longer (or 7.5 hours) before you get sunburned. This is provided, of course, that you’ve applied the sunscreen properly so that you’re getting the prescribed protection.

5. “Reactions To Sunscreens?”

Sunscreens can be both an irritant and an allergen, though allergic reactions are rare. Irritant reactions, however, abound. One classic error in sunscreen application is to put a large amount of sunscreen on the forehead. Perspiration and gravity can cause the sunscreen to migrate down your forehead into your eyes, causing a stinging sensation. Some people attribute this to an allergic reaction and discontinue use. It’s also important to wash your hands after applying sunscreen, since rubbing your sunscreen covered finger near your eyes can induce an irritant reaction.

6. “Why Is It Important To Use Sunscreens During Childhood?”

It appears that a great deal of time can elapse between actual sun damage and the development of skin cancer or other skin problems like photoaging. Therefore, it is important to protect your skin from an early age when you are out in the sun.

7. “Sunscreens And The Elderly?”

Many elderly people can become quite obsessed by sun avoidance, and their quality of life can suffer. Sometimes, if they are diagnosed with an actinic keratosis or basal cell carcinoma, they can become anxious and almost leap from shadow to shadow. However, few of them are likely to develop new skin cancers from present sun exposure. As long as they are prudent about avoiding excessive sun exposure and protecting their skin to prevent sunburn, they can continue to enjoy time outdoors.

8. “Can Sunscreens Prevent Cancer?”

There is clear evidence that sunscreens are helpful in preventing actinic keratoses, which are warty lesions that can occur on sun-exposed skin of the face or hands. Research has shown that these lesions can develop into a cancer called squamous cell carcinoma, and that this is linked to a cumulative exposure to the sun.

However, there is surprisingly little evidence that sunscreens have much effect in preventing another kind of skin cancer called basal cell carcinoma, or for malignant melanoma. For malignant melanoma and for basal cell carcinoma, the character and timing, that is, the type of sunlight and your age at the time of the exposure to the sun appears to be more important than the cumulative dose.

Many Sunscreen Products are Harmful to Health

For 29 years, the FDA has refused to publish safety standards for sunscreen products. That’s nearly three decades of keeping the public in the dark about the extremely harmful, cancer-causing chemicals found in sunscreen products. Any idea why the Food and Drug Administration has taken so long to set safety standards for a product used by over 100 million Americans? If you guessed, “Because the greedy corporations selling the toxic sunscreen products don’t want the FDA to study the safety of their products,” give yourself golden star sticker. You got it! The FDA has no interest in protecting the public from cancer-causing personal care products, and that simple fact is made abundantly clear by the FDA’s 29-year delay to establish basic safety guidelines.

As is increasingly the case, non-profit groups are now doing the job the FDA should be doing but refuses to do. In this case, the Environmental Working Group (www.EWG.org), one of my top recommended non-profit organizations, has compiled a list of 700 name-brand sunscreens along with the toxic chemicals they contain. You’ll find the list at http://www.ewg.org/sunscreen/

As the EWG reports, many sunscreen products contain cancer-causing chemicals that get absorbed right through the skin:

Some sunscreens absorb into the blood and raise safety concerns. Our review of the technical literature shows that some sunscreen ingredients absorb into the blood, and some are linked to toxic effects. Some release skin-damaging free radicals in sunlight, some act like estrogen and could disrupt hormone systems, several are strongly linked to allergic reactions, and still others may build up in the body or the environment. FDA has not established rigorous safety standards for sunscreen ingredients.

After 29 years of debate, the government has failed to set mandatory sunscreen safety standards. Companies are free to make their own decisions on everything from advertising claims to product quality. In lieu of setting final standards, the Food and Drug Administration (FDA) advises people to stay out of the sun from 10 am to 4 pm. FDA now stands in direct violation a Congressional mandate requiring the agency to finalize sunscreen safety standards by May 2006, flouting not only Congress but also consumers, who are reliant on sunscreen to protect their health.

84% of sunscreen products harm consumers
As the EWG’s research reveals, an incredible 84% of sunscreen products are harmful to consumers. You read that right: More than four out of five sunscreen products actually harm the people who use them.

Making Sense of Sunscreen Products

Most people are understandably confused when it comes to choosing a sunscreen because of the baffling array of available choices. Common questions about sunscreens include

* How high should the SPF be?

* Should it block UVA or UVB?

* Does it matter whether it is a gel, cream, or spray?

* Should it be water-resistant or waterproof?

SPF stands for sun protection factor. The SPF numbers on a product can range from as low as 2 to as high as 60. These numbers refer to the product’s ability to screen or block out the sun’s burning rays. The SPF rating is calculated by comparing the amount of time needed to produce sunburn on protected skin to the amount of time needed to cause a sunburn on unprotected skin. The higher the SPF, the greater the sun protection. However, it is a common mistake to assume that the duration of effectiveness of a sunscreen can be calculated simply by multiplying the SPF by the length of time it takes for him or her to suffer a burn without sunscreen, because the amount of sun exposure a person receives is dependent upon more than just the length of time spent in the sun. The amount of sun exposure depends upon a number of factors including the length of exposure, time of day, geographic location, and weather conditions.

The sun’s rays contain different wavelengths of ultraviolet (UV) light. The two types of UV rays that pass through the earth’s atmosphere and cause damage to the skin are UVB and UVA. UVB rays are the primary cause of sunburn and affects the outer layer of skin.

The strength of UVB radiation depends upon the time of day, season of the year, and geographic location. UVB rays are most intense from 10 a.m. to 2 p.m. and are stronger in summer, at higher altitudes, and closer to the equator.

Unlike UVB rays, which do not penetrate glass, UVA rays can travel through window glass and damage the deeper layers of the skin. Both UVA and UVB light contribute to age-related changes in the skin such as wrinkles, freckles, age spots, and prominent blood vessels. Both UVA and UVB exposure raise the risk of skin cancer.

Sunscreens can be broadly classified into two categories: chemical sunscreens and physical sunscreens. Chemical sunscreens absorb UV radiation while physical sunscreens act by physically blocking it. Chemical sunscreens can be UVA or UVB absorbers. Many sunscreens have a combination of ingredients and may contain both physical and chemical sunscreens.

Physical sunscreens are good blockers of both UVA and UVB radiation. The two most common physical blockers of UV radiation are titanium dioxide and zinc oxide. Examples of chemical sunscreens include:

* PABA (para-aminobenzoic acid): Rarely found in modern preparations, PABA was an early chemical sunscreen that often induced sensitivity reactions.

* PABA esters (glyceryl, padimate A and padimate O): These newer preparations have fewer side effects than the original PABA.

* Salicylates (homosalate, octyl salicylate)

* Cinnamates (cinoxate, octyl methoxycinnamate or octocrylene): Octocylene is a cinnamate with both UVA and UVB absorbing properties.

* Benzophenones: These can absorb both UVA and UVB rays.

* Ecamsule (Mexoryl) is a potent UVA blocking compound.

Since both UVA and UVB radiation can be damaging, an ideal sunscreen provides protection from both types of radiation. The SPF system measures only the degree of protection from UVB rays. No rating system exists that measures the degree of protection from UVA exposure.

Most experts recommend reading the list of ingredients in a sunscreen to see if it has broad-spectrum (UVA and UVB) coverage. Many products labeled as “broad spectrum” or “UVA blockers” do not adequately block UVA rays. A good broad-spectrum sunscreen should contain avobenzone, ecamsule (Mexoryl), titanium dioxide, or zinc oxide for significant UVA protection.

Whether you choose a lotion, stick, gel, or cream sunscreen depends largely on your skin type and personal preference. Oil-free gels are good solutions for facial skin prone to breakouts, and sprays may make application to the back and shoulders easier.

“Water-resistant” sunscreens should retain their protective ability for at least 40 minutes in water. Those labeled “waterproof” should protect the skin for 80 minutes in water.

The American Academy of Dermatology recommends using a broad-spectrum sunscreen with an SPF of at least 15 on a daily basis throughout the year. An important note is that no sunscreen can be effective unless it is properly and frequently applied. About 1 ounce (5-6 teaspoons) of sunscreen is recommended to cover the entire body. Further, sunscreen must be reapplied every two hours when staying outdoors for a prolonged period of time.

FDA wants the labeling on your sunscreen to tell you more about protection against the sun’s harmful rays

Under a new regulation, the agency has proposed that sunscreen labeling be expanded to provide

• A four-star rating system that informs consumers how well the product protects them against “Ultraviolet A” (UVA) light.

• Information on other ways people can limit their risks to dangers posed by overexposure to sunlight.

What do “UVA” and “UVB”stand for?

UVA and UVB are types of ultra­violet (UV) radiation emitted by the sun. Although the atmosphere’s ozone layer shields us from most of this radiation, the UV light that gets through can cause problems. UVB light is primarily responsible for sunburn. UVA light penetrates the skin more than UVB light does, and causes tanning. Both types of UV light contribute to premature skin aging, skin cancer, and other types of skin damage..

Currently, sunscreen labels are required to carry a “Sunburn Protec­tion Factor” (SPF) value that informs potential users how well the product protects against UVB light.

The Four-Star System.

Under the proposed regulation, a UVA star rating would be promi­nently displayed on sunscreen labels, near the SPF rating..

“For more than 30 years, consum­ers have been able to identify the level of UVB protection provided by sunscreens using only sunburn protection factor or SPF values,” said Andrew C. von Eschenbach, M.D., Commissioner, Food and Drugs. Under this proposal, “consumers will also now know the level of UVA protection in sunscreens, which will help them make informed decisions about protecting themselves and their children against the harmful effects of the sun.”

With the proposed UVA rating system.

• One star will represent low UVA protection
• Two stars, medium protection
• Three stars, high protection
• Four stars, the highest UVA protection available in an over-the-counter (OTC) sunscreen product.
• If a sunscreen product does not rate at least one star, FDA is proposing that its labeling bear a “no UVA protection” marking on the front label, near the SPF value.

Sunscreen Not the Only Option.

In addition to the new rating system, FDA wants sunscreen labels to advise consumers that using a sunscreen is just one way they can protect them­selves against the sun. Limiting time in the sun and wearing protective clothing as part of a comprehensive sun protection regimen are other rec­ommendations that would be promi­nently displayed on labels. Using sunscreens liberally and reapplying frequently would also be advised.

Changes With SPFs, Too.

FDA also wants to make changes regarding protection against UVB light. The agency has proposed amending its existing rule on UVB products to increase the maximum sunburn protection factor from SPF 30+ to SPF 50+.

The proposed rule is asking the pub­lic to comment on the use of nanopar­ticle ingredients in sunscreens, and is proposing to

• make minor changes in SPF (UVB) testing procedures consistent with current science, to further enhance the accuracy of SPF values.
• allow new combinations of active ingredients.

Top Five Sun Care Picks From EWG

We’ve established the importance of sun care, for your baby, and the entire family. At this time there aren’t any safety standards set by the FDA for sunscreens. So it is important for parents to know what they are truly rubbing into their baby’s bodies. A good example of the standards set for our sunscreens is the use of PABA (”a skin damaging chemical”, EWG) that was more widely used in the past. It still is, however, since there was an outcry from consumers with allergic reactions, companies use it less.

The bottom line is that we parents need to be aware that some sunscreens may be potentially more harmful than good. “Studies show that some traditional sunscreens like oxybenzone and octinoxate definitely absorb into healthy skin – in large amounts according to some studies – and act like estrogens in the body, raising risks for breast cancer, and showing effects like hormone-driven uterine damage in other studies”. 1

Take a look at your current sunscreen and you will probably find one of these ingredients, if not both. There is also some controversial concern with the micro sized (nanosize) titanium and zinc. Are these particles so small that they can absorb through the skin and into our blood stream? For now it is considered safe (as long as the particles aren’t too small) on healthy skin. A good way to test is this, if the sunscreen rubs clear onto your baby’s skin, it is nanosized. If it rubs on with some white, the particles are not too small.

Below we’ve listed the top five choices according to the Environmental Working Group. We always suggest, however, to do your own homework and then you can make an educated decision as to what is right for your family.

Environmental Working Groups Safest Sunscreen Picks

1. Keys Soap Solar Rx Therapeutic Sunblock
2. Trukid Sunny Days Facestick Mineral Sunscreen UVA/UVB Broad Spectrum
3. California Baby Sunblock Stick No Fragrance
4. Badger Sunscreen
5. Marie Veronique Skin Therapy Sun Serum