How can mask formulations improve the heat sensation caused by preservatives? What range of viscosity is generally appropriate to control for aqueous patch masks?

A mask recipe that feels hot on the face, the preservative used is phenoxyethanol, how to reduce the hot feeling without changing the preservative?

Whether the presence of phenoxyethanol in a facial mask is harmful to the skin should be determined by the content. Phenoxyethanol has potent bacteriostatic properties against Pseudomonas aeruginosa, and against gram-positive and gram-negative bacteria, as well as bacteriostatic effects. It can be used as a preservative in cosmetics, and low concentrations of phenoxyethanol are harmless to the skin, but skin care products containing too much phenoxyethanol can cause skin irritation.

1. Add some coolant;
2. 2. Add some anti-irritation ingredients, such as: dipotassium glycyrrhizinate;
3. 3. Add some ingredients targeting the TR PV1 channel, e.g.: Dermisol, Yupenin.

It is possible that the heat sensation is due to phenoxyethanol activating the TRPV1 receptor, causing the skin to feel burning, if this is the cause, adding ingredients that have the ability to inhibit the activation of the TRPV1 receptor can alleviate the problem.

This is mainly due to the activation of TRPV1 receptors by external stimuli (e.g. temperature, pH, certain ingredients), which makes the skin feel hot. You can try to add some TRPV1 receptor antagonists, such as SymSitive® 1609, Sens flower SD-SC, Saffron, or Phenoxyethanol. Or compound a little ethylhexylglycerin to reduce phenoxyethanol permeability.

You can also cut back a bit if there is a lot of glycerin in the system.

I added hydrogenated lecithin to a mask product and dissolved it, but I didn’t use u10 as a prep solution, so I directly added it to the product and stirred it after moistening it, and then it was neutralized and there was a small gelatin granule in the end. When I did not add hydrogenated lecithin, there was no such phenomenon. Is it possible that hydrogenated lecithin cannot be combined with carbo?

The two should be compatible, need to do another experiment to verify the next, the U10 will be prefabricated, and then add hydrogenated lecithin. 3 times the results of the experiment to compare, you can draw a conclusion.

Cabo u10, it is recommended to soak it well in advance, in addition to adding it with a homogenized beat.

Hydrogenated lecithin can be used with carbol, but it is recommended that carbol be added first at the time of production, without the need to pre-dispersed can be, and then add hydrogenated lecithin when the carbol is well dissolved, so that the kind of situation mentioned above will not occur.

Hydrogenated lecithin and carbohydrates can be used together, but because of the addition of powder, it will be easy to make hydrogenated lecithin and macromolecule powder with the polymer brought down from the system into a precipitate, and macromolecules can not complete the solubilization, so it is best to be dissolved after the completion of the two to be mixed

What range of viscosity is usually appropriate for aqueous patch masks?

Most of them are around 1500, but it depends on the film cloth, and the test material will not drip.

The general factory recommendation is to control the viscosity of the mask at about 1000-2500cps, but of course it is also related to the specific film cloth. If the viscosity is too low, it will easily lead to dripping of the mask; if the viscosity is too high, the material can not wet the film cloth well; if it is too high or too low, it will affect the experience of the product.

It’s just a normal moisturizing mask, after applying it, why does it also have a whitening and brightening effect?

1. Moisturizing effect: Moisturizing masks are rich in moisturizing ingredients, such as glycerin and hyaluronic acid. These ingredients can improve the water content of the skin to a certain extent and increase the moisture content of the skin. When the moisture on the surface of the skin increases, the skin will look fuller and smoother, thus showing a whiter and brighter effect.

• Improvement of the Epidermal Stratum Corneum: Certain ingredients in the moisturizing mask penetrate the epidermal stratum corneum and bind with the lipids between the keratinocytes to enhance the stratum corneum’s ability to moisturize. This helps to improve the texture and structure of the stratum corneum, resulting in a smoother skin surface and an increased ability to reflect light, thus making the skin look brighter and more radiant.

3, the promotion of blood circulation: when applying masks, due to the covering and moisturizing effect of the mask, it can increase the temperature and humidity of the skin, which in turn promotes blood circulation. Good blood circulation helps the metabolism of skin cells, delivering nutrients and oxygen to skin cells and promoting skin renewal and repair. This improves the glow and brightness of the skin.

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