White Horehound 苦薄荷/夏至草

Horehound, White (Marrubium Vulgare) organically grown flower seeds_  Floral Encounters_.j

How Air Pollution Ages Your Skin

By now, most people know that air pollution directly affects their overall health and well-being, but few realize the heavy toll it takes on their skin.

Mounting research shows that a form of air pollution known as particulate matter can penetrate the skin to induce oxidative stress and inflammation, paving the way for wrinkles, fine lines, mottled pigmentation, and cancer

Every day we’re bombarded by dust, soot, pollen, and smoke in the air from various sources, despite our best efforts to avoid them. These particles—collectively referred to as particulate matter—are small enough to penetrate the skin, where they generate a storm of free radicals.  The ensuing oxidative stress creates an unfavorable environment of inflammation, lipid peroxidation, and DNA damage that compromises the skin’s structural integrity to accelerate aging.

Protect Your Skin from Toxic Pollution

The impact of air pollution can appear quickly. Researchers discovered that healthy steel workers exposed to particulate matter for three consecutive days experienced blood-cell DNA damage that reduced the expression of cancer-preventing genes.

Abundant research shows a strong association between particulate-matter exposure and the hallmarks of skin aging. One study found that participants were 20% more likely to suffer from skin pigmentation on the forehead and cheeks when exposed to increased levels of soot and traffic particles. Another study showed that higher levels of indoor air pollution from cooking fuels increased the likelihood of wrinkle formation on the face by 5%-8% and on the back of the hands by 74%.

When researchers examined the totality of evidence that exists to date, they concluded that “air pollution exerts detrimental effects on human skin.


Marrubium vulgare, also known as White Horehound, is a medicinal plant that belongs to the Lamiaceae family. While celebrated in ancient times by the Romans and Arabs for its ability to treat respiratory disorders and indigestion, research today reveals that Marrubium vulgare extracts show promise in lowering lipids,1 blood pressure,2 and blood sugar.3,4

These benefits are mostly related to its free-radical scavenging and anti-inflammatory properties, 5,6 which translates into vital skin protection and rejuvenation. Marrubium vulgare was shown in vitro to exhibit four key characteristics that make it an ideal pollution fighter:7

  • Protects against the entry of particulate matter into the skin, reducing uptake by 76%.

  • Removes and neutralizes damaging free radicals as evident by a 21%, 26%, and 38% reduction in DNA damage, carbonylation, and lipoperoxidation, respectively.

  • Strengthens the skin’s barrier function by 18.6% versus control after exposure to particulate matter.

  • Repairs cell metabolism by boosting adenosine triphosphate (ATP) production by 66%.