The Skincare benefits of postbiotics



Feb 15, 2023

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I understand the toll chronic stress takes on your mind, body, and skin. Throughout many years of figuring out my health issues, I have channelled my existing knowledge as a Holistic Remedial Therapist and up-skilled as a Certified Cosmetic Formulator to create FIFTY7KIND, offering a collection of Multi-Award-Winning, Luxury formulas elevated by High-Performance Clinically Proven Actives, designed to holistically treat the impact of stress, by calming, nurturing, rejuvenating and restoring balance to the skin. Every product is made by hand in my Artisan lab in Australia.

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Your skin barrier function is everything disrupt it at your peril! Your skin barrier is made up of corneocytes [cells] that act like bricks. Corneocytes are tightly bound, by mortar-like fats called ceramides, cholesterol, and fatty acids. This layer also contains a protein called filaggrin, which helps make natural moisturizing factors (NMF) for the skin. In this article, we discover the skincare benefits of postbiotics.

Your skin barrier acts as a security guard, protecting what’s inside and preventing skin aggressors such as UV radiation, pollution, bacteria, dirt, and toxins from passing through. You are covered in an ecosystem that works in harmony with the skin barrier known as your microbiome.

What is the Microbiome?

The skin’s microbiome comprises of trillions of microorganisms, consisting of bacteria, fungi, and viruses. These invisible life forms are what we refer to as the skin microbiome. They play an important part in your overall health as part of your immune system. It works with your skin barrier to:

  • Fight infection. Some microbes act like a natural antibiotic, helping keep your skin acidic, which many germs don’t like.
  • Help your immune system work. Microbes in your skin act as a warning flare, alerting your immune system to harmful bacteria or viruses.
  • Play a role in how your cells respond to UV light. That’s the kind that causes skin cancer.
  • Heal wounds and control inflammation. Signals from your skin microbiome can activate or deactivate your immune system. That helps you heal and controls harmful inflammation.
Illustration of bacteria cells on the skin known as the "Microbiome"
Illustration of bacteria cells on the skin known as the “Microbiome”

What can affect your skin microbiome?

  • Genes
  • Diet
  • Other lifestyle choices, like smoking
  • Environment
  • Air pollution
  • Exposure to UV light
  • The menopause*

*A note on menopause and your microbiome – After menopause, oil glands reduce in size, leaving the skin drier, and more sensitive. The natural aging process increases the pH levels of your skin which causes changes to the microbiome and therefore the immune response on the outer layer of the skin. Maintaining a strong and resilient skin barrier becomes even more critical to help prevent water loss, sensitivity, and redness.

An imbalance in your microbiome is called dysbiosis and is linked to certain skin health conditions:

  • Eczema (atopic dermatitis)
  • Psoriasis
  • Acne
  • Rosacea
  • Wounds that do not heal

What are postbiotics?

Postbiotics are the metabolites, or byproducts of living organisms (probiotics) and are created during the lipid fermentation process. The microbial cells or their cellular components are deliberately inactivated, with or without metabolites, which allows them to maintain a state of skin flora equilibrium and prove to be stable and safe in skincare products. 

The Skincare benefits of postbiotics

  • Postbiotics encourage a healthier skin microbial ecosystem
  • Highly moisturizing with skin penetration capabilities 
  • Powerful active antioxidants 
  • Anti-sebum 
  • Anti-inflammation
  • Anti-irritation
  • Have a natural emulsifying capacity.

Postbiotics and your natural skin barrier work together to form a strong defensive shield. A compromised skin barrier becomes ‘exposed’ with reduced capabilities to defend against environmental stressors, leading to:

  • Dry, and more sensitised skin
  • Heightened inflammatory responses make it prone to sensitivity breakouts
  • Nerve receptors TRPV-1 can trigger skin reactions in response to heat, foods, and alcohol causing skin redness and irritation.


Lactobacillus Bulgaricus Ferment Filtrate is a prebiotic derived from soy and chicory via a process of fermentation. This cosmetic extract is capable of enhancing the overall function of skin cells while increasing the antioxidant activity of Lactobacillus bulgaricus. 

I have incorporated postbiotics into the formulation of LUCA | Lipid-Ferment Vitamin C Serum via fermented lipids. The micro-organism [Pseudozyma] is combined with Olive Fruit, Sunflower Seed, Argan Kernel, Apricot Kernel, and Sweet Almond Oils and fermented for 150 hours with whole plant extracts of: 

  • Angelica Root – Skin Brightening
  • Cromwell Root – Collagen Boosting
  • Licorice Root – Skin Brightening

Fermented Extracts, via Lactobacillus bulgaricus Ferment and White Willow Bark:

  • Cellular Renewal and Boosting Barrier Function

Collectively the Skincare benefits of postbiotics create a potent source of the microbiome and skin-loving prebiotics and postbiotics protect and promote a healthier skin microbial ecosystem and strong skin barrier defence.

Until next time, be human be kind be you.

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The Skincare benefits of postbiotics. LUCA Lipid Ferment Vitamin C Serum is a rich source of postbiotics.

SHOP NOW LUCA Lipid Ferment Vitamin C Serum is a rich source of postbiotics.


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