October 03, 2011 12:35 ET

Scientists Confirm Safety of CND UV Nail Lamp

Manicures Using UV Nail Lamps Significantly Safer Than the Sun

VISTA, CA--(Marketwire - Oct 3, 2011) - Rapid Precision Testing Laboratories in Cordova, TN has issued a statement about the safety of CND's UV Nail Lamp based on its recent test comparing the lamp to natural sunlight and various indoor tanning lamps on the market. The test, based on the nationally accepted CIE1 Standard for Non-Melanoma Skin Cancer Action Spectrum, confirms that bulbs used in CND's UV Nail Lamp are among the safest in use today. The test specifically examined the possibility of skin or eye risks being reasonably likely to occur during a nail service. The lab concludes that there is very little risk of a person developing skin cancer from the radiation emitted by the CND UV lamp. This clearly discounts an erroneous paper2 that recently caused widespread fear among media and salon clients who get Shellac power polish or gel manicures.

According to Robert M. Sayre, Ph.D. and John C. Dowdy Ph.D. of Rapid Precision Testing Laboratories, a biophysicist and photobiologist who have published over one hundred articles related to sunscreens and UV exposure and thoroughly tested the CND UV Nail Lamp, "The bulb has virtually no UVB or UVC radiation. It has little UVA-2 and consists primarily of UVA-1. UVA-1 is the least erythemic3 and photocarcinogenic part of the ultraviolet spectrum. Our conclusion is that this UV source properly belongs in the least risky of all categories." Sayre goes on to say that the physicians making the report cited above have grossly exaggerated exposures in using UV nail lamps. Whether driving a car or holding a cell phone on-the-go, hands get more UV exposure from natural and artificial light than from use of UV nail lamps.

Here are the findings of Drs Sayre and Dowdy's research comparing the CND UV Nail Lamp to sunlight and five types of indoor tanning units.

Comparison of Maximum Annual Exposure Limits IEC 25kJ/m2
Indoor Tanning vs Sunlight vs Nail Curing Lamp
UV Source Hours
UV Type 5 Booth 8
UV Type 4 Body Lamp 13
UV Type 4 Facial Lamp 15
UV Type 3 Body Lamp 17
UV Type 3 Facial Lamp 39
CND UV Lamp 114
CIE AM1G 77/1 Sunlight 10
CIE AM1.5G 77/2 Sunlight 29

The shorter the exposure time to reach the 25 Non-Melanoma Skin Cancers (NMSC) effective J/m2, the riskier the source is to produce skin cancer. Higher numbers signify less risk to skin.

To experience the equivalent effect of spending 30 minutes under a UV Type 3 Body Tanning Lamp, one would need to use a CND UV Nail Lamp continuously for 3.4 hours. Standard CND Shellac power polish services require six minutes and 10 seconds of curing in a UV Nail Lamp. Therefore, 30 minutes under the least risky tanning bed is equivalent to 34 CND Shellac manicures at 6 minutes per hand per service.

Furthermore, CND Chief Scientific Advisor, Doug Schoon recently co-authored another independent study ( with two other nail industry scientists. They analyzed UVA and UVB ray output from leading UV nail lamps on the market and natural sunlight. A key conclusion of their report was UV nail lamps have less UVB light (cause of sunburn and skin cancer) output than natural sunlight. UVA exposure is equivalent to spending an extra 1.5 to 2.7 minutes in sunlight each day between salon visits.

Women who enjoy professional salon manicures and pedicures using CND Shellac Power Polish or Brisa Gel can safely conclude that their hands are safe when using a CND UV Nail Lamp.

CND has one of the world's largest laboratories for professional nail research and development, and utilizes state-of-the-art equipment to analyze UV output, equipment design, health and safety. CND's knowledge in polymer science and expertise in UV technology is unparalleled. Participation in scientific symposia including 'RadTech,' the largest event dedicated to the education, technical and scientific advancement of Ultra Violet (UV) keeps CND at the forefront of this science.

  1. Commission International de l'Eclairage Central Bureau. Vienna, Austria
  2. MacFarlane DF, Alonsa CA. "Occurrence of nonmelanoma skin cancers on the hands after UV nail light exposure." Arch Dermatol. 2009. Describes two cases of skin cancer on the hands of women who got manicures
  3. Erythemic: "Redness of the skin caused by dilatation and congestion of the capillaries, often a sign of inflammation or infection." American Heritage Dictionary Fourth Edition 2000

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