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Every cosmetic product has to be microbiologically stable.
What this means: When a product is opened, microorganisms such as bacteria, yeasts or mould can find their way into it via the hand of the user or the surrounding air. Without water, these microorganisms cannot exist. As most cosmetic products contain water, they also have to be preserved in one way or another.
For this reason, unless they are completely free from water, it is necessary for all cosmetics to contain preservatives. Preservatives should kill microorganisms. If they do this, they are doing their job.
But any substance that kills microorganisms can, if not carefully dosed or comprehensively tested for undesired side-effects, also be damaging to the skin or even dangerous to health. That is why we have specially selected the preservatives we use.
No chlorinated preservatives.
The preservatives with the largest potential to cause harm are halogen-organic compounds.
Halogenated substances have considerable allergy potential, are reactive and if they make their way into the tissue they can decompose, accumulate and provoke damage. That's why we never use them.
No formaldehyde-releasing agents.
Formaldehyde-releasing agents are used in all sorts of cosmetics products. Formaldehyde-releasing agents are also present in nature. For example, in stored fish formaldehyde arises when enzymes break away from the trimethylamine oxide contained in the fish. Some vegetables such as tomatoes, cauliflower, green beans and spinach contain formaldehyde levels of 3-60 ppm. Formaldehyde also occurs naturally in fruit (grapes, apples, pears) and fish. In order to be cautious, we never use it at all. Free formaldehyde is thought to be carcinogenic.
Parabens are used in all sorts of cosmetics products. Some researchers think that they could have hormonal effects. That's why in order to be cautious, we simply don't use them.
Phenoxyethanol is used in all sorts of cosmetic products. Some researchers think that due to its chemical similarities with parabens, it could have similar effects. That's why in order to be cautious, we very rarely use them.