Microneedle systems as medical devices for esthetical treatments: A risk assessment approach.

Background: Microneedling devices are being used as a surgical technique without a clear regulatory category. They can become dangerous considering that these kind of devices can easily be bought and used by nonqualified people.

Aims: Our aim has been to demonstrate that microneedling devices used in dermatological surgery are Medical Devices according to the current regulations.

Nail dryer devices: a measured spectral irradiance and labelling review.

The popularity of nail beauty has increased during the last few years in Spain, as well as in other countries. Nowadays there are a large number of nail dryer devices in the market with ultraviolet (UV) fluorescent lamps, light emitting diodes (LED) or a combination of both. The different spectral emissions of each individual nail dryer device require particular nail polishes, which are polymerized by specific wavelengths and a controlled exposure time to achieve the desired results.

Ultraviolet spectral distribution and erythema-weighted irradiance from indoor tanning devices compared with solar radiation exposures.

Concern regarding the impact of indoor tanning devices on human health has led to different regulations and recommendations, which set limits on erythema-weighted irradiance. Here, we analyze spectral emissions from 52 tanning devices in Spanish facilities and compare them with surface solar irradiance for different solar zenith angles. Whereas most of the devices emitted less UV-B radiation than the midday summer sun, the unweighted UV-A irradiance was 2-6 times higher than solar radiation.