Terminalia Arjuna Bark
INCI: TERMINALIA ARJUNA BARK
Reviewed by Emma · Last updated 14 Aug 2026
A traditional bark extract that may support barrier function and skin resilience
Best For Skin Types
All, Dry, Mature
Addresses
Usage Frequency
Daily
What Is Terminalia Arjuna Bark?
Terminalia arjuna bark extract is derived from the arjun tree, a plant native to the Indian subcontinent and traditionally used in Ayurvedic medicine. The extract contains pentacyclic triterpenes and tannins—naturally occurring compounds with structural properties that may interact beneficially with skin tissue.
In skincare formulations, it functions as a skin protectant. The evidence suggests it may help reinforce the skin's outer barrier and support the skin's natural repair processes, making it of particular interest for formulations targeting aged or compromised skin.
How It Works
The pentacyclic triterpenes in Terminalia arjuna appear to work by interacting with skin cells at a molecular level. Research has shown they may upregulate genes involved in collagen synthesis within fibroblasts—the cells responsible for producing structural proteins in the dermis.
The tannin content may also contribute to the extract's protective effects, potentially helping to stabilise the skin's lipid barrier and reduce water loss. This dual action on both structural support and barrier integrity suggests a multi-layered approach to skin protection.
Clinical Evidence & References
A controlled study involving 30 patients found that topical application of Terminalia arjuna bark extract led to measurable improvements in transepidermal water loss, skin hydration, and elasticity compared to vehicle control. A separate group of postmenopausal women showed improvements in skin sebum content and microcirculation, suggesting potential benefits during hormonal shifts in skin behaviour.
Laboratory studies using cultured skin cells have demonstrated that the extract can stimulate collagen production and barrier-supportive gene expression. However, the overall body of published research remains modest in scale, and more extensive clinical trials would help establish optimal concentrations and long-term efficacy.
Published Research
How to Use
Terminalia arjuna bark extract is typically found in serums, creams, and barrier-repair formulations. There is no standard usage restriction; it can generally be incorporated into both morning and evening routines. If using a product containing this ingredient for the first time, introduce it gradually to monitor for any individual sensitivities.
Safety & Precautions
Frequently Asked Questions
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Take the skin quizOther forms of Terminalia Arjuna Bark
These appear on ingredients lists under different names but are the same substance. Terminalia Arjuna Bark is the common form.
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