CAS number: 439685-79-7
Molecular weight: 192.21
Density: 1.368±0.06 g/cm3
Boiling point: 376.0±42.0 °C
Molecular formula: C8H16O5
Melting point: N/A
Flash point: N/A


Pro-xylane (Hydroxypropyl tetrahydropyrantriol) is a biologically active c-glycoside (C-glycoside) in aqueous media that acts as a biosynthetic activator of glycosaminoglycans (GAGs). Pro-xylane was the first “green” chemical used in cosmetics.

Product Name



Puri-Xylane;Hydroxypropyl tetrahydropyrantriol;



Molecular formula


Molecular Weight


General Description

Colorless viscous liquid


Cosmetic raw materials

Efficacy and Mechanism of Action

The main role of Pro-xylane (Hydroxypropyl tetrahydropyrantriol) in cosmetics and skin care products is skin conditioner, antioxidant, risk factor is 1, relatively safe, can be used with confidence, generally has no effect on pregnant women, h Pro-xylane (Hydroxypropyl tetrahydropyrantriol) is not acne-causing.Pro-xylane (Hydroxypropyl tetrahydropyrantriol) was originally an ingredient developed by Lancome in 2006. According to research, this is a glycoprotein mixture made from xylose. Beech is rich in xylose, which is well known to stimulate the production of glycoaminoglycans (GAGs) and prevent the loss of moisture in the skin. Pro-xylane (Hydroxypropyl tetrahydropyrantriol) enters the skin and promotes the production and construction of proteoglycans in the extracellular matrix (such as gelatinous protein networks and sugars that act as scaffolds and intercellular shock absorbers). These molecules absorb water, make the matrix gelatinous, and increase the firmness of cells and skin. It can also be used as a channel to guide repair molecules (such as proteins for cell growth). As the skin ages, the extracellular matrix gradually loses its elasticity; the cells begin to deteriorate and can no longer produce proteins that promote youthfulness, such as collagen. Pro-xylane (Hydroxypropyl tetrahydropyrantriol) uses the activity of the extracellular matrix to inform aging cells what to do, send messages to young cells, and re-stimulate aging cells at the same time. According to the Lancôme laboratory (not an independent laboratory), “Experiments and human experiments show that the improvement is comprehensive, not limited to the extracellular matrix: there are also the connection between the matrix and cells, the density and firmness of the skin. , Or promote the production of young fibers like collagen. There is no research report that products containing Pro-xylane (Hydroxypropyl tetrahydropyrantriol) have negative information or adverse side effects and warnings, although Pro-xylane (Hydroxypropyl tetrahydropyrantriol) The ingredients are suitable for wrinkled skin, pigmented skin, oily skin, non-pigmented skin, tolerant skin, dry skin, firm skin, and sensitive skin. 


Function of Pro-xylane

Pro-xylane (Hydroxypropyl tetrahydropyrantriol)nters the skin and stimulates the part that produces and builds the extracellular matrix (a gel-like network of proteins and sugars that act as a scaffold and shock absorber between cells) called proteoglycans. These molecules absorb water and make the matrix more gel-like, increasing the firmness of the cells and increasing the firmness of the skin. It can also serve as a highway to guide supplemental molecules (such as growing proteins) to cells.


As skin ages, the extra-cellular matrix looses its elasticity; cells deteriorate and can’t produce youth-boosting proteins, such as collagen. Pro-xylane (Hydroxypropyl tetrahydropyrantriol) utilizes the activity of the extra-cellular matrix to tell aging cells what to do and transmits information to younger cells and re-stimulates older cells simultaneously.


This wrinkle-fighting ingredient helps to increase the appearance of volume and thickness while reducing the visibility of wrinkles.



1kg, customizable

Storage condition

Stored in a cool, ventilated warehouse, 2~8℃. Stay away from fire and heat.





Colorless viscous liquid



Purity (HPLC)





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