Hi, this is my first post here and I am happy to have joined your corner! <span>
I have developed my own natural skin care in Norway and I have been using probiotic juices in some of the skin care products. I am not an educated chemist, I am self taught and passionate about skin care!
I recently got an email where another brand suggests that my probiotic juice is not any good and that they are actually the only brand in the world who has live, active bacteria in their products, because they use level 4 of probiotics. This was new info for me and I would like to know if you have heard of these levels of probiotics before?
The levels are as such:Level 1:
These products use the “broth” from a microbial soup. The microbes are grown on a substrate (think of this as a watery solution of microbial nutrients) and then the probiotic microbes are filtered off. The “broth” is the remaining solution (which has the products of the microbes in it.) Level 2:
These probiotic extracts are called lysates because the probiotic cells are ruptured – obviously killing them in the process. In this technique, the probiotics are again cultured in a nutrient-rich substrate but instead of filtering them off, the cells are broken so that their cell contents leak out before the mixture is filtered. This method results in an “extract” that contains the cytoplasm (cell contents) of probiotic microbes. Level 3:
In this technique, the microbes are kept whole but they are killed with heat. This process is called tyndallisation and here the culture of probiotics is heated to 60 °C and cooled again over three days. These probiotics can still dock onto skin cells but obviously can’t grow and divide to significantly alter the skin’s microbiome. Level 4:
This is the incorporation of live probiotic microbes in the final product. There are a number of difficulties in this process. Firstly, the use of a preservative system would kill the microbes, so the product needs to be preservative free. Secondly, it is exceedingly difficult to ensure that the probiotics are not killed during the production process. Thirdly, there are storage considerations for the final product … if the temperature drops too low, then the water in the probiotic cells will freeze and, because water expands when it freezes, the cell membrane of these cells will break and most of the cells will die. If the temperature rises above 40 °C, the enzymes in the live cells will start to denature and, again, most of the probiotics will die.
The brand then claims that they have overcomed these challenges and that they are the only brand in the world to have active, live bacteria in their products that can live up to 2 years.
I would love to know your take and opinion about probiotics in skin care. Thank you so much for any comments