F. Victor Rueckl, MD - Lakes Dermatology & The Spa at Lakes Dermatology
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Skincare Blog

In an effort to keep you informed about the latest products and procedures, please visit our Skincare Blog. And if you have any questions about any of these articles, please don't hesitate to call our office. Thanks for visiting!

How Do You Choose The Right Dermal Filler?

Dr. Rueckl selects which filler to use primarily based on the location the filler will be injected. Some fillers, like Restylane or Perlane, have larger particle sizes, so they fill deeper lines better or plump areas like the lips better. Other fillers, like Juvederm, fill tiny marionette lines (sometimes called smoker's lines) better because the filler particles are so tightly bound together. We rarely recommend patients do Radiesse for their first filler ever and tend to only recommend that filler to patients who've tried and loved previous filler products. Additionally, Radiesse can never be placed in the lips because the compound is too firm and white and will never look soft or natural when in the lips. You can always see Dr. Rueckl before you do any fillers to discuss what's on the market, his experience, his recommendations for you, and he can answer any questions you have.

15? 30? Higher? What Sunscreen Should I Buy?

According to the Skin Cancer Foundation, SPFs of at least 15 should be recommended as they prevent 93 percent of UVB from reaching the skin. SPF 30 blocks only 4 percent more UVB (97%), and those over 30 protect the skin from just a miniscule more percentage of rays. The U.S Food and Drug Administration will soon cap the SPF number at 30 because protection benefits at higher levels than 30 are negligible, while adding false confidence to the consumer of significantly higher protection.

Physical and Chemical Sunscreens

Two types of sunscreen ingredients, physical and chemical, are available to prevent UV rays from attacking the viability of healthy skin cells. A physical sunscreen is not absorbed into the skin. It physically reflects the rays away from the skin by sitting on top of the skin. The type used the longest, for over 300 years, is zinc. Zinc has not been shown to have any adverse reactions, and actually has been shown to support and promote healing of the skin.

What Is UVB? UVA?

UVB, or Ultraviolet Burning, are short wave solar rays measuring 290-320 nanometers. It stimulates the production of essential Vitamin D in our bodies. Considered the cause of sunburn, they are also thought to be the main cause of basal and squamous cell carcinomas, and to highly contribute to the cause of melanoma. UVA, or Ultraviolet Aging, are long wave solar rays of 320-400 nanometers.

How is My Sunscreen's SPF Number Determined?

The SPF - sun protection factor - of any sunscreen is determined in an FDA-approved, independent lab and must be determined by using a panel of at least 20 human subjects. It is determined by measuring the time it takes to develop skin redness (erythema) to a known amount of radiation. The most important factor you need to consider when choosing sun protection is the ingredients in the sunscreen, not the SPF number.

What Does "Broad Spectrum" Mean?

Often people misinterpret broad spectrum to mean "full protection", but this is not the case. Broad spectrum indicates the ability of a product to protect against parts of the UVA and UVB spectrums; it does not guarantee protection against all wavelengths.

What Should Be Additionally Formulated Into Sunscreens?

Unfortunately, even products with broad spectrum SPFs cannot completely block the sun. Some UV radiation reaches and penetrates the skin, generating free radicals and attacking the skin cells, collagen, and elastin. A recent university study shows, however, that the inclusion of antioxidants in SPF formulations increases protection by the action of their neutralizing activities on the free radicals generated by the rogue UV rays. With the addition of these antioxidants, the SPF properties of the sunscreens were enhanced, allowing them to provide the broad-spectrum protection. While the technology is still be developed to fully incorporate antioxidants into sunscreens, you can add a separate antioxidant, like SkinCeuticals CE Ferulic, or SkinCeuticals Phloretin, to aid in your skin's ability to protect itself.

What is SPF?

SPF is an acronym for ‘Sun Protection Factor,’ a number assigned to a product to measure the length of time it can, in theory, protect skin from reddening from UVB, compared to how long the skin takes to minimally redden without the protection of that product. The protected time can be determined by taking the usual time the person reddens while unprotected, times the SPF number of the product. For example, if it takes this person 20 minutes to redden usually, the product assigned an SPF 15 will in theory protect this person 20 x 15, or 300 minutes, approximately 5 hours. Reapplication ahead of this 5 hour mark will help, though. Don't wait until the last minute to reapply! The most effective tool you can use in the war against skin aging and cancer is education on the use of SPF. While the SPF has become the standard measure for UVB protection, none exists for UVA.


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Lakes Dermatology
8861 W. Sahara Ave., Suite 290
Las Vegas, NV 89117
Phone: (702) 869-6667

The Spa at Lakes Dermatology
8861 W. Sahara Ave., Suite 190
Las Vegas, NV 89117
Phone: (702) 341-7546 (SKIN)

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