Trichosanthes Kirilowii Stem Juice: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 30, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Trichosanthes Kirilowii Stem Juice?

Trichosanthes Kirilowii Stem Juice is the liquid pressed out of the stems of Trichosanthes kirilowii, a climbing vine in the gourd family. The plant is native to East Asia where its roots and fruits have long been valued in traditional beauty rituals. When cosmetic chemists noticed the soothing feel the fresh stem sap leaves on skin, they began exploring it as a modern skincare ingredient.

To produce the juice, freshly harvested stems are cleaned, crushed and gently pressed. The resulting fluid is then filtered to remove fibers and stabilized so it can blend well with creams, gels or serums. Chemically the juice is rich in natural sugars, amino acids and trace minerals that help bind water to the skin surface.

Today you are most likely to see Trichosanthes Kirilowii Stem Juice in hydrating sheet masks, calming moisturizers, lightweight lotions and after-sun gels where a non-greasy burst of moisture is desired.

Trichosanthes Kirilowii Stem Juice’s Cosmetic Benefits/Uses

Its main role in skincare formulas is straightforward yet important.

Skin conditioning: The juice deposits a thin, breathable layer of natural humectants that attract and hold water on the skin. This improves softness and suppleness, helps reduce the appearance of flaky patches and supports a healthy moisture barrier without leaving a heavy feel.

Who Can Use Trichosanthes Kirilowii Stem Juice

This mild, water-like extract is generally well tolerated by all skin types including dry, oily, combination and sensitive. Because it is lightweight and non-occlusive it hydrates without clogging pores, which makes it attractive for acne-prone skin too. There are no known skin types that must avoid it unless a person has a specific allergy to gourds.

The juice is entirely plant derived, processed without animal by-products and is therefore suitable for vegans and vegetarians.

No data indicate that topical Trichosanthes Kirilowii Stem Juice poses a risk to women who are pregnant or breastfeeding. Still, this is not medical advice and anyone expecting or nursing should review any new skincare product with their doctor to be safe.

The ingredient has not been shown to cause photosensitivity, so users do not need special sun precautions beyond everyday sunscreen use.

Potential Side Effects/Adverse Reactions

Responses to topical Trichosanthes Kirilowii Stem Juice differ from person to person. The following list covers potential side effects, but most people will not experience them when the ingredient is formulated and used correctly.

  • Mild redness or stinging in extremely sensitive skin
  • Contact dermatitis in individuals allergic to plants in the gourd family
  • Eye irritation if the product accidentally gets into the eyes

If any irritation or discomfort develops stop using the product and consult a healthcare professional if symptoms persist.

Comedogenic Rating

Rating: 0–1. Trichosanthes Kirilowii Stem Juice is almost entirely water with small amounts of naturally occurring humectant sugars and amino acids, all of which sit on the skin surface without blocking pores. It lacks heavy oils, waxes or fatty acids that typically cause congestion, so the risk of clogging is very low.

Because of that low rating, products containing this juice are generally suitable for people who are prone to acne or breakouts.

Keep in mind that a formula’s overall comedogenicity depends on every ingredient in the final product, so always look at the complete ingredient list if you are highly reactive to pore-cloggers.

Summary

Trichosanthes Kirilowii Stem Juice conditions the skin by drawing in water and forming a light hydrating film that leaves the surface feeling smooth and refreshed. It does this thanks to its natural humectant sugars, amino acids and trace minerals.

While not yet a household name, the ingredient is appearing more often in modern moisturizers, sheet masks and after-sun gels as brands search for gentle plant based hydrators.

Current research and consumer reports point to a strong safety profile with only rare instances of mild irritation or allergy in sensitive users. As with any new skincare ingredient it is wise to perform a small patch test to ensure personal compatibility before applying it to larger areas.

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