Hyaluronic serum with preservative | Tutorial

Which preservative to use in a hyaluronic serum?

Today our customer inspired us and we decided to bring you a recipe for a hyaluronic serum. Her specific question was which preservative she should use in her recipe. And we are very pleased that in the world of natural cosmetics there is beginning to be more discussion about natural preservatives. In this area quite a lot of prejudices have been created, while there is really nothing to be afraid of, quite the opposite. You may need to worry about your skin if you make a product at home from purely natural raw materials which, over time, under the influence of heat and the presence of oxygen, begin to work and, naturally, bacteria and moulds are formed. Preservative does not immediately mean something artificial/synthetic. There are natural extracts which slow down the “ripening” and thus your natural product retains its original properties.

But let’s move on to hyaluronic acid itself. Since we recently wrote that the most effective choice is the combination of LMW (low-molecular-weight hyaluronic acid) and HMW (high-molecular-weight hyaluronic acid), because each acts on a different layer of the skin, we are bringing you a recipe in which both are used in the same ratio, so that the best properties of both types will be utilised in the serum. An advantage of using both is also that high-molecular-weight hyaluronic acid forms a thicker gel in an aqueous environment, so in this recipe no thickener is needed.

The ratio of ingredients in the recipe is set for a 10 ml bottle:

Name of raw material	Content in (g)	Content in %
Glycerin	0,3g	3%
Low-molecular-weight hyaluronic acid	0,02g	0,2%
High-molecular-weight hyaluronic acid	0,02g	0,2%
D-Panthenol	0,16g	1,6%
Cosgard	0,1g	1%
Collagen	1g	10%
Demineralised water	8,4g	84%

Procedure:

1.	Mix the powders with glycerin – it may take a while until the mixture becomes homogeneous.
2.	Gradually stir in the other components (collagen and D-panthenol are optional substances which you can omit and make up their share with water or replace them with vitamins – however, it must be kept in mind that this is a serum that is applied around the eyes and the components should be selected accordingly).
3.	Finally, stir in the water, which you can also combine, in the given amount, for example with flower waters, of course again such that do not irritate the sensitive eye area.
4.	Since this is a water-based mixture, it is necessary to preserve the serum, which is why we use Cosgard in the recipe (this preservative can be replaced by another one, but attention must be paid to pH and usage rate).

view of a glass bottle with pump closure full of transparent liquid – hyaluronic serum. Around the bottle with the serum there are several drops of spilled serum on the background. The background consists of a plain, light green background. The bottle with the serum is lying down. Top view and studio lighting

Hyaluronic serum with preservative and when to apply it to the skin?

Ideally twice a day, in the evening and in the morning after thoroughly washing the face.

Is a preservative really necessary?

Yes, it is! Because this is a water-based product, it is therefore very important to protect your product against microbial growth. This is often almost invisible to the naked eye. The consequences of using such contaminated products are very unsightly. On the market today there is a very good range of natural preservatives, also at acceptable prices. Your serum will last a maximum of a week in the fridge. In this time you have no possibility to use it up. And if you consider how much hyaluronic acid costs and also the time you devote to production (the serum needs to be applied for several months before you achieve the desired results), is it really economical and efficient to throw away the leftovers after a week and make a new batch every week and basically, on the borderline days at the end of the week, already to risk microbial contamination?

How long will a product with a preservative last?

Everything depends on which preservative you choose, what quantity you use and whether the other raw materials are not also contaminated. There are also testers with which you can easily measure these parameters.

In any case, this mixture should last you up to 3 months.

In the case of purely natural products, it is a more suitable way to make smaller quantities and more often.

How to make hyaluronic serum with preservative ?

Which preservative to use in a hyaluronic serum?

Procedure:

Hyaluronic serum with preservative and when to apply it to the skin?

Is a preservative really necessary?

How long will a product with a preservative last?