Enhancing the Epidermal Barrier

these varied dermal depths playing integral roles in your skin’s overall vitality

The skin is made up of five distinct layers – the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale – with each their own distinct purpose, and these varied dermal depths playing integral roles in your skin’s overall vitality.

Wondering why your skin is still so dry after moisturizing? The answer likely lies right on the outermost layer of the epidermis: the stratum corneum, also known as the moisture barrier. No layer of the skin is quite as impactful at preventing unwanted dryness and dehydration while protecting your skin against the elements than the moisture barrier – but not all moisturizers are cut out the same to keep the stratum corneum as healthy and hydrated as can be.

Even more importantly, the stratum corneum is your skin’s first barrier of defense against environmental aggravators and condition-altering factors like ultraviolet light exposure, bacteria, and fungi, and constantly works to replenish your skin cells through a regular four-week peeling cycle known as ‘desquamation.’

The desquamation process first begins all the way in the deepest layer of the skin, the stratum basale, where new skin cells are born and initially divided before making their way up through the epidermis. These youngling cells then begin shifting shape in the stratum spinosum while producing keratin, the main foundations of the skin’s structural integrity. Cells begin to flatten out further up in the stratum granulosum, before pushing up into the stratum corneum – the all important epidermal barrier – where the skin cells are effectively dead on arrival and ready to be sloughed off to let the process to start anew.

Poorly maintained stratum corneum and an incomplete skin peeling can lead to problems like rough and scaly skin texture

But if improperly cared for, your moisture barrier may be left vulnerable to fail in its role as the skin’s suit of armor and disrupts its desquamation cycle, resulting in visibly compromised skin. Poorly maintained stratum corneum and an incomplete desquamation can lead to problems like rough and scaly skin texture, decreased elasticity and significantly impaired cell renewal – all symptoms that can penetrate deeper into the skin’s layers and exacerbate common skin problems like dehydration and aging.

Without this much-needed internal cell turnover functioning at full capacity, your skin’s underperforming moisture barrier will be externally evident, leading to visibly duller and dryer skin than desired by most.

Studies show that following a consistent, moisturizing skincare routine is the best way to preserve your moisture barrier and lock-in its hydration retaining properties, especially when paired with science-backed barrier repair ingredients like essential fatty acids, niacinamide and ceramides.

Essential fatty acids like Omega-6 and Omega-3 help to stimulate health cell membrane formation and make the moisture barrier function at peak performance, and since these don’t occur naturally in the body, topical formulations can be one of the best ways to target the hydration-boosting properties of essential fatty acids directly onto your skin.

Though ceramides are also a fatty acid, they can actually be found naturally present throughout the epidermis and act as an important protective layer between the atmosphere and your skin – a must-have for keeping your moisture barrier at its best. But considering our natural ceramides fade over time, integrating topical ceramides into your daily skin routine can be an important factor in the continued vitality of your skin’s corneum stratum and keeping hydration locked-in.

Niacinamide – also known as Vitamin B3 – is also a science-backed solution for a diminished epidermal barrier, and has become renowned for its moisture-boosting and skin strengthening properties in its topical application.

Whether you’re dealing with common skin conditions like rosacea or if you simply suffer from standard dry skin, modern research has revealed that a targeted moisturizing routine with ingredients like the above can help people back on track with the desquamation process – all leading to improved skin texture, hydration, and providing some much-needed rejuvenation to the epidermal barrier.

So next time you’re suffering from dry skin, keep in mind that sometimes it really is all about the surface level.