Probiotics in Skin Care

Much like our beloved morning eggs, bacteria have long been misunderstood. For years, we were advised to scrub away these microorganisms in pursuit of clear and radiant skin. However, emerging scientific evidence indicates that we might benefit from stepping back from aggressive cleansers, considering adding beneficial bacteria to our skincare routines, and even including them in our diets.

Our microbiome is a complex ecosystem within our bodies, crucial for maintaining homeostasis—the state of balance essential for optimal health. It comprises around 100 trillion microbes, such as bacteria, fungi, and viruses, predominantly found in our gut.

In recent studies, scientists have revisited the human microbiome through a microscopic lens, discovering that not all bacteria are harmful or unwelcome intruders.

The gut-skin link: an unexpected revelation

While the gut is the hub of our microbiome, our skin also has its own diverse microbial community. For the skin to carry out its protective, temperature-regulating, and moisture-retaining roles effectively, it must maintain homeostasis. An extensive array of bacteria inhabits the skin, most of which are harmless or even advantageous.

Scientific research confirms that the microbiomes of the gut and skin are closely interconnected. “Similar microorganisms can be present in both the gut and the skin,” notes Dr. Gretchen Frieling, a board-certified dermatopathologist.

“A balance of beneficial and harmful bacteria in the gut supports the skin’s function as a barrier, shielding against toxins and pathogens,” explains Frieling. “When both the gut and skin are functioning optimally, the body produces more anti-inflammatory compounds to combat conditions like acne, eczema, psoriasis, and rosacea.”

In fact, studies indicate that an imbalanced gut microbiome can trigger inflammation in the skin. Conversely, a well-balanced microbiome helps fortify the skin against factors that can cause irritation, dryness, or premature aging due to environmental stress, according to Frieling.

Probiotics and prebiotics: incorporating healthy bacteria into your diet

Dietary and psychological factors can disrupt our microbiome, but we can restore its balance by incorporating friendly bacteria into our nutrition, particularly through probiotics.

Probiotics, the live microorganisms beneficial to our health, especially our digestive systems, have shown promising results in various studies. One study indicated that participants taking probiotic supplements for 12 weeks experienced a decrease in transepidermal water loss, which is the evaporation of water from the skin, resulting in improved hydration. Another study revealed that probiotics enhanced skin barrier function, while a third found reduced skin sensitivity with probiotic consumption.

It’s also critical to include prebiotics, which are a special type of fiber that nourishes the beneficial bacteria in our gut, as highlighted by Frieling.

“A diet rich in indigestible fiber (prebiotics) is necessary to nourish good bacteria; without a proper food source, probiotics cannot thrive,” she explains. “If you take probiotics without accompanying prebiotics, sustaining beneficial microorganisms may become challenging.”

Topical probiotics: a new frontier for skin care

The past notion that we must thoroughly cleanse our skin of impurities has evolved, and today, numerous skincare products are rich in beneficial bacteria.

Research indicates that topical probiotics can enhance ceramide levels (naturally occurring in the skin’s outer layer and crucial for water retention) in individuals with eczema, decrease acne lesions and harmful bacteria, and alleviate skin sensitivity in healthy individuals.

It’s advisable to consult with a healthcare professional, as not everyone may benefit from probiotic skincare. “Current studies suggest these products are not suitable for individuals who are immunocompromised or have low white blood cell counts,” warns Frieling.

Just like our microbiome, our skin yearns for balance. Whether achieved through probiotic supplements, targeted skincare, or a diet enriched with fermented foods, once our skin attains its equilibrium, it promotes strength, calmness, and radiance. Thanks to our friendly bacteria, we can celebrate the revival of their reputation.

Simple prebiotic options

If the idea of using chicory root or Jerusalem artichoke as prebiotics seems intimidating, don’t worry! Common foods like bananas, raw leeks, raw onions, raw garlic, apples, and flaxseeds are abundant in prebiotics.

Choose the right probiotic for your skin

Before purchasing a probiotic supplement, it’s essential to understand which strains are included and inquire about the research backing the product. Certain bacterial strains may be more effective for specific skin types, according to Dr. Gretchen Frieling, dermatopathologist.

Dealing with dehydrated skin?

Consider taking a probiotic supplement featuring Lactobacillus paracasei NCC 2461, which research indicates may bolster the skin’s barrier and enhance hydration.

This article was originally published in the March 2020 issue of Daitrl Canada.