Role and Efficacy of Propylene Glycol in Cosmetics
Moisturizing effect
propylene glycol is hygroscopic and can form a protective film that locks in moisture to keep the skin hydrated. It also binds tightly to the cells of the stratum corneum to prevent water loss.
Promotes Penetration
Propylene Glycol has good solvent properties that help other active ingredients penetrate deeper into the skin and improve product absorption.
Propylene Glycol itself has a certain antioxidant capacity, which helps to resist free radical damage and slow down the aging process.
Antiseptic
Propylene Glycol also acts as a preservatives in cosmetics, helping to extend the shelf life of the product.
Contraindications of Propylene Glycol
Skin Irritation
Although propylene glycol is usually safe for the skin when used in moderation, if the concentration is too high or if it is used in excess, it may cause skin irritation, resulting in uncomfortable symptoms such as redness, itching and burning of the skin. These adverse reactions are especially likely to occur in those with sensitive skin.
Degreasing effect
Propylene glycol has the properties of a fat-soluble solvent with high permeability and solubility. Overuse may dissolve the oil on the surface of the skin, leading to skin degreasing.
Impact on Fetal Development
Some studies have shown that the use of skin care products containing propylene glycol during pregnancy may adversely affect the growth and development of the fetus, so pregnant women should avoid the use of such products as much as possible.
Allergic reactions
Propylene glycol may cause skin irritation, redness or itching discomfort, and may also cause side effects such as localized burning pain. If these symptoms occur, use should be stopped immediately.
In summary, propylene glycol has an important role and efficacy in cosmetics, but its potential side effects and contraindications need to be noted when using it, especially for sensitive skin and pregnant women, who should be cautious about using products containing propylene glycol.
