We talked with a thousand women in the U.S.

to learn about their skin concerns,

and here’s what they said.*

While women don’t know as much

about blue light pollution or its impact

on skin, they should—they are exposed

to blue light pollution every night.

Blue light is the highest energy

wavelength of visible light,

from 380-500nm on the spectrum.

Blue light waves actually penetrate

skin more deeply than UVA or UVB rays.

In today's modern world, blue light is all

around us. It comes from natural sunlight,

but also from devices like computers,

televisions, tablets and cell phones,

streetlights and the energy-efficient

lights in your home.

Exposure to blue light in the morning

is vital to "wake us up." It helps

boost alertness, memory, cognitive

function and mood.

At night, it's a different story.

Exposure to blue light in the evening

can trick your body into thinking it

is still daytime—disrupting your

circadian rhythm, impacting natural

melatonin production and affecting sleep.

In a major breakthrough,

Estée Lauder Research has proven

that blue light can negatively impact

skin's natural repair processes.

Our testing showed for the

first time that even just 30 minutes

of nighttime blue light exposure can have

a dramatic impact on skin's

natural circadian rhythm.

This leads to a weakening of skin's

natural nighttime repair—and multiple

negative effects for skin.