Laser hair removal on the face is a minimally invasive medical procedure that uses a beam of light (a laser) to remove hair. Learn what to expect from this procedure.

We gathered insights from experts and recommendations from our testers to determine the eight best at-home laser hair removal devices that are safe and effective.

Considering CO2 laser resurfacing? Get the details here, including how it works, what skin concerns it can address, and the average cost.

Read Cosmo's review of the 10 best at-home laser hair removal devices of 2025, plus dermatologist-approved tips and tricks for safe and effective results.

Nearly a decade ago, a detector searching for ghostly cosmic particles found two anomalous signals in Antarctic ice. But scientists haven’t been able to find anything similar.

Laser-produced plasmas have been used to create short bursts of x-rays and to accelerate particles — so-called plasma-based accelerators.

In a stunning leap forward for space technology, Chinese scientists have achieved an unprecedented breakthrough in satellite communication, using a laser as weak as a nightlight to outpace the ...

Water-leak sensors, which keep you in the loop if your plumbing fixtures spring a leak, can prevent a small spill from becoming a big problem.

Whether you need a simple desktop monochrome laser for a home business, a color machine for churning out handouts and presentations, or a multifunction printer for a busy office, we've got a top ...

Installing a smart water sensor can save you a lot of money and hassle. The best models we've tested immediately alert you to leaks and even shut off your home's water supply.

Lasik eye surgery costs an average of $2,632 per eye. The best ways to save are by using a discount through your insurance and paying with an FSA or HSA.

Semiconductor lasers articles from across Nature Portfolio Semiconductor lasers use the optical properties of semiconducting materials to produce coherent light. Electrons and their positive ...