A plant-based ingredient used in Chinese medicine for more than 2,000 years may offer therapeutic anti-aging properties, along with a range of skin benefits, including collagen support, antioxidant activity, and barrier enhancement. While larger trials are needed, a systematic review of studies from 2015-2025 highlights growing preclinical and emerging clinical evidence that Astragalus membranaceus and its bioactive constituents may promote antioxidant, anti‑inflammatory, and photoprotective effects that positively impact skin aging.
Healthy Cellular Aging
The root of astragalus membranaceus is valued for its bioactive compounds, particularly astragalosides, polysaccharides, and flavonoids, which have been studied for their effects on inflammation, oxidative stress, cellular energy, and skin aging pathways. In dermatology, astragalus extract is often discussed as a potential supportive ingredient for photoaging, barrier health, and uneven skin tone.
Astragalus provides antioxidant and anti-inflammatory support, which may be beneficial for those with skin redness. Its flavonoids may help neutralize reactive oxygen species and modulate inflammatory signaling through pathways such as toll-like receptor four.
Astragalus-related compounds may also reduce UVA-related oxidative damage, preserve mitochondrial membrane function, and support skin energy production — all of which may translate to healthier cellular aging over time.
Lily Park, DO, FAAD, a dermatologist at University of California, Davis, says she was a resident when she first met a patient using astragalus extract on their skin to prevent skin aging.
“Later, I met another dermatologist in his late 50s with remarkably healthy, glowing skin who also credited this ingredient,” she explains. “Those two encounters made me curious: What is this ingredient’s mechanism of action? I wanted to evaluate the evidence.”
Dr. Park found that astragalus may influence several skin-relevant pathways, including those involved in collagen production, firmness, and fine lines.
“Research suggests astragalus can promote type one collagen production and reduce collagen breakdown, in part by influencing signaling pathways involved in skin remodeling,” she explained. “Some components appear to reduce enzymes that degrade collagen, like matrix metalloproteinase-1, especially in UV-stressed skin. These mechanisms matter for visible photoaging.”
Dr. Park also noted that certain astragalus fractions have been associated with reduced UV-related collagen breakdown and improvements in barrier and hydration factors, including hyaluronic acid-related pathways and proteins involved in barrier integrity, such as filaggrin and lipid synthesis pathways.
“Clinically, that could support smoother texture and better moisture retention,” she noted, “especially when paired with sunscreen and barrier-focused skincare.”
Low Risks, High Benefits
While astragalus may also influence melanogenesis signaling, resulting in reduced pigmentation, discretion is advised when using Astragaloside IV. This type of astragalus, according to Dr. Park, may increase pigmentation depending on formulation and context.
There are also further considerations that apply. Patients with autoimmune conditions should use caution or avoid formulations containing astragalus, as large doses could stimulate immune activity and interact with immunosuppressants. Dr. Park advises that patients with these conditions should consult their physician before use. Additionally, limited data is available for astragalus use during pregnancy.
Overall, using cosmetic products containing astragalus presents low risks and high benefits for photoaging and barrier health, according to Dr. Park.
“The information from our study can improve patient care by helping dermatologists counsel patients more confidently about astragalus as a ‘natural’ skincare ingredient,” she said. “The available evidence suggests it may serve as a supportive add-on for photoaging and skin-barrier health.”
She adds, “While stronger human studies are still needed to confirm benefits and clarify the most effective formulations, this review increases awareness of a lesser-known botanical that may complement, rather than replace, proven basics like daily sunscreen and evidence-based topical treatments.”
Key Takeaways:
- Astragalus membranaceus is a natural, plant-based ingredient that promotes skin health and healthy aging.
- This ingredient may act as a supportive add-on to other evidence-based skin care practices.
- Pre-clinical data suggest it may reduce oxidative stress, preserve mitochondrial function, and signal for increased collagen production.
- Data also suggest telomere‑protective effects under oxidative challenge, pointing to the potential of astragalus membranaceus to shield the protective caps that prevent chromosomes from fraying, tangling, or fusing with neighboring chromosomes during cell division.
- While small clinical trials reported improvements in hydration, tone, and wrinkle appearance, evidence is not yet definitive as study sizes, formulations, and follow‑up remain limited.
