Our skin goes through a lot. It keeps out everyday pollution, provides protection against UV rays and regenerates at mega-speed, thanks to our (sometimes) overzealous application of skincare acids – our skin can take a bit of a beating, and the results aren’t always pretty.

But what really happens when you damage your skin barrier? And are there ways you can speed up the repair process? Here, we explain all.

We might hear about it a lot – but what is our skin barrier? In a nutshell, the skin barrier comprises of the uppermost layers of the skin – which help protect the deeper layers of the epidermis below. Often referred to as the stratum corneum or acid mantle, it helps to stop the passage of irritants and allergens through the skin and into our body and also protects our skin from losing excess hydration – something that’s referred to as trans-epidermal water loss (TEWL).

“The skin barrier is traditionally described as a brick wall,” explains Michael J Cork, professor of dermatology at The University of Sheffield. “The bricks are skin cells and the mortar is the lipid lamellae that surround the skin cells.” Meaning, a healthy skin barrier is a strong brick wall, with no holes or damage to the bricks and mortar; a damaged skin barrier forms cracks, which allows irritants to get in and moisture to get out.

“A healthy skin barrier means your skin is functioning at its best,” says Daniel Isaacs, director of research at Medik8. “To keep it healthy, it needs the right balance of humectants, emollients and occlusives. If the balance of these three components is off, it can result in dry, dehydrated and sometimes even sensitised skin.”

But how is our skin barrier damaged and what can we do to stop it? “Our skin barrier can become damaged due to a number of reasons,” explains Jennifer Rock, facialist and founder of Skingredients. “For example: using the wrong ingredients or too many exfoliants or misusing skincare products.”

And that’s not all. Everything from stress and pollution to UV rays and blue light exposure can all compromise our skin barrier. So, it’s important to keep yours in tip-top shape if you want to protect your skin from developing other issues.

“Unfortunately there’s no one-size-fits-all barrier fix,” says Rock. “If your skin barrier is impaired, your skin will suddenly become tighter, more easily irritated, there may be patches of flakiness and redness and it may look duller due to dehydration.

To get your skin back on track, I’d suggest reducing your use of exfoliating acids for a short while, perhaps a week or two, and opting for very nourishing, fatty ingredients.”

Ceramides are one of the fats you find natively in your skin, and research suggests that they greatly support the skin’s barrier.

Antioxidants are a go-to when your skin is in any way stressed, irritated or tired, as they can help to soothe the skin while protecting it from further damage.

And it’s important to up your levels of hydration: in particular rebalancing the levels of humectants, emollients and occlusives.

“Wearing SPF daily is also integral for your skin, so don’t neglect that if you’re trying to keep your barrier in good nick,” says Rock. “On the inside, essential fatty acids (such as omegas) are important in maintaining normal skin function, and the ingestion of some strains of probiotic barrier has been shown to improve skin barrier function, such as L-paracasei.” 

Images: courtesy of brands