What Is Bidens Pilosa? The Plant-Based Retinol Alternative Explained
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Retinol alternatives have become one of the fastest-growing categories in skincare, and most of the attention has gone to bakuchiol. But there is a second plant-derived option that appears increasingly often on ingredient lists, sometimes marketed as a "bio-retinol": Bidens pilosa extract.
The marketing around it tends to be enthusiastic and light on detail. This guide explains what Bidens pilosa actually is, what the research shows and doesn't show, how it compares to retinol and bakuchiol, and why it is particularly well suited to the eye area.
What Is Bidens Pilosa?
Bidens pilosa is a small flowering plant in the daisy family, native to the Americas and now found across tropical and subtropical regions worldwide. It is known by many common names — black jack, beggar's ticks, Spanish needles — and has a long history in traditional medicine across Africa, Asia, and South America, where it has been used for wounds, inflammation, and skin complaints.
The plant contains a broad range of bioactive compounds, including flavonoids, polyacetylenes, phenolic acids, and phytol — a compound derived from chlorophyll. It is this chemical profile, rather than any single active, that has made it interesting to cosmetic researchers looking for gentler alternatives to vitamin A derivatives.
On an INCI ingredient list, it appears as Bidens Pilosa Extract. For more on how to read and interpret ingredient lists, our INCI label guide covers the fundamentals.
Why Is It Called a "Bio-Retinol"?
Conventional retinol works by converting to retinoic acid in the skin, which then binds to retinoid receptors in skin cells. These receptors come in two families — RAR and RXR — and together they regulate the genes involved in cell renewal and collagen production. That is the mechanism behind retinol's well-documented effects on fine lines, texture, and uneven tone.
Bidens pilosa is not a vitamin A derivative and does not convert to retinoic acid. The "bio-retinol" label comes from laboratory research showing that it influences some of the same pathways. The most frequently cited study, published in 2015 in Evidence-Based Complementary and Alternative Medicine, tested a standardised Bidens pilosa extract on human skin cells and on fragments of human eyelid skin, alongside retinol and retinoic acid as comparisons. The extract:
- Increased collagen production in skin cells, though less than retinoic acid did
- Increased elastin production
- Strongly increased the expression of RXR receptors — more than retinol or retinoic acid in the same test
- Had little effect on RAR receptors, which are the main target of retinoic acid
In other words, Bidens pilosa works partly through the same receptor system as retinol, but not in the same way. It is "retinol-like" in some of its effects, not a plant version of retinol. That distinction matters, because it also explains why it doesn't produce retinol's typical side effects.
What the Evidence Actually Shows
It is worth being precise here, because the claims made about Bidens pilosa often go further than the research does.
The laboratory evidence is promising. Cell and skin-fragment studies show meaningful effects on collagen, elastin, and retinoid receptor activity. These are the mechanisms you would want to see in an anti-aging ingredient.
The human evidence is limited. Ingredient manufacturers have published results from small consumer studies — one widely quoted trial reported a reduction in wrinkle depth of around 28% after six weeks among 40 volunteers — but these studies are funded by the manufacturers, are not published in peer-reviewed journals, and do not compare the extract directly to retinol.
Compared to bakuchiol, it is earlier in its evidence journey. Bakuchiol has a randomised, double-blind clinical trial published in the British Journal of Dermatology showing results comparable to retinol over twelve weeks. Bidens pilosa does not yet have an equivalent independent trial.
None of this means Bidens pilosa doesn't work. It means the honest summary is: a well-tolerated botanical with a plausible, laboratory-supported mechanism and encouraging early results — not a proven like-for-like replacement for retinol. For a broader comparison of the options, our guide on retinol vs retinol alternatives covers the landscape in detail.
Bidens Pilosa vs Retinol vs Bakuchiol
| Retinol | Bakuchiol | Bidens pilosa | |
|---|---|---|---|
| Origin | Vitamin A derivative | Psoralea corylifolia seeds | Bidens pilosa plant |
| Mechanism | Converts to retinoic acid; activates RAR and RXR | Retinol-like gene expression without receptor binding | Mainly RXR activity; supports collagen and elastin |
| Clinical evidence | Extensive | Independent randomised trial | Laboratory studies and manufacturer trials |
| Irritation risk | High | Very low | Very low |
| Photosensitivity | Yes | No | No |
| Morning use | Not recommended | Yes | Yes |
| Compatible with COSMOS certification | No | Yes | Yes |
Who Is Bidens Pilosa Suited To?
Bidens pilosa makes the most sense for people who want to support cell renewal and collagen but for whom retinol is impractical:
- Sensitive or reactive skin — it does not cause the redness, peeling, and barrier disruption associated with retinol. Our sensitive skin guide covers what else to look for.
- Anyone who has tried retinol and given up — because the irritation outweighed the results, or because the adjustment period never ended.
- Early prevention in your late 20s and 30s — when the goal is to support skin quality over time rather than treat established deep wrinkles.
- Pregnancy and breastfeeding — vitamin A derivatives are generally advised against during pregnancy. Bidens pilosa is not a vitamin A derivative, which is why it is often chosen as an alternative, though it is always worth checking new products with your midwife or doctor. Our guide to pregnancy-safe skincare covers the wider picture.
If you have resilient skin and are treating deep, established lines or significant sun damage, conventional retinol remains the most evidence-backed option. A retinol alternative is a better fit for a different profile, not a weaker version of the same thing.
Why Bidens Pilosa Works Well Around the Eyes
The eye area is where the trade-offs of retinol are most obvious. The skin there is roughly a quarter of the thickness of the skin on the cheeks, has fewer oil glands, and is in constant motion. It is often the first place to show fine lines — and also the place where retinol is most likely to sting, flake, or cause redness.
This makes the eye area a natural fit for a gentler cell-renewal active. Bidens pilosa can be used morning and evening, doesn't increase sensitivity to the sun, and doesn't require the gradual build-up schedule that retinol does. Combined with ingredients that address hydration and dark circles, it allows an eye product to do more than moisturise without taking on retinol's tolerability problems.
For more on when an eye product is genuinely worth adding to your routine, see our guide on whether you need eye cream in your 20s and 30s. And if dark circles are your main concern, our guide to what causes dark circles and what actually helps explains why the right ingredient depends on the cause.
How to Use Bidens Pilosa
Because Bidens pilosa doesn't cause photosensitivity or the irritation phase associated with retinol, using it is straightforward:
Apply morning and evening, after cleansing and before moisturiser. For eye products, use your ring finger and tap gently along the orbital bone rather than rubbing.
Be consistent and patient. Like any ingredient that works on collagen and cell renewal, results build over weeks rather than days. Give it at least six to eight weeks of daily use before judging the effect.
Pair it sensibly. It works well alongside hyaluronic acid, niacinamide, and vitamin C. In the morning, follow with SPF — not because Bidens pilosa makes skin sun-sensitive, but because UV exposure undermines any anti-aging routine. Our guide on how to layer skincare products covers the order.
FrostBloom and Bidens Pilosa
Bidens Pilosa Extract is the key active in FrostBloom's Retinol Alternative Eye Serum. It is supported by horse chestnut seed extract for the vascular component of dark circles and puffiness, Alteromonas Ferment Extract for texture and the skin's natural repair processes, borage seed oil, and dual-weight hyaluronic acid. For more on the supporting actives, see our guides to horse chestnut extract and Alteromonas Ferment Extract.
The serum is ECOCERT COSMOS NATURAL certified, with 100% natural-origin ingredients. It contains natural fragrance from essential oils, including geranium, so a patch test is recommended if your skin is fragrance-sensitive.
The Bottom Line
Bidens pilosa is a plant extract with a genuinely interesting mechanism: it influences part of the same receptor system as retinol, supports collagen and elastin in laboratory studies, and does so without retinol's irritation or photosensitivity. The human evidence is still early, and it shouldn't be presented as a proven equivalent to retinol.
For sensitive skin, for the eye area, and for anyone who wants to support skin renewal without managing retinol's side effects, it is a well-reasoned choice — as long as expectations are set by the evidence rather than the marketing.
Frequently Asked Questions
Is Bidens pilosa as effective as retinol?
Not on current evidence. Laboratory studies show it supports collagen and elastin and activates part of the retinoid receptor system, but retinol has decades of clinical research behind it and produced stronger effects in the same laboratory comparison. Bidens pilosa's advantage is tolerability: it delivers meaningful benefits without irritation, which means it can be used consistently by skin that cannot tolerate retinol.
What is the difference between Bidens pilosa and bakuchiol?
Both are plant-derived retinol alternatives with very low irritation risk. Bakuchiol is better studied, with an independent randomised clinical trial comparing it directly to retinol. Bidens pilosa works through a different mechanism — mainly via RXR receptors — and its evidence so far comes from laboratory studies and manufacturer trials.
Can I use Bidens pilosa in the morning?
Yes. Unlike retinol, Bidens pilosa does not increase the skin's sensitivity to sunlight, so it can be used morning and evening. Always finish your morning routine with SPF.
Can I use Bidens pilosa during pregnancy?
Bidens pilosa is not a vitamin A derivative, which is why it is commonly used as an alternative to retinol during pregnancy and breastfeeding. As with any product during pregnancy, check with your midwife or doctor if you are unsure.
Can I use Bidens pilosa with vitamin C?
Yes. There are no known compatibility issues. Vitamin C in the morning adds antioxidant protection and brightening, while Bidens pilosa supports cell renewal and firmness — the two complement each other well. Our vitamin C guide covers what to look for in a formulation.
How long does Bidens pilosa take to work?
Expect to use it daily for six to eight weeks before judging the results. Improvements in hydration and smoothness may be noticeable sooner, but effects on fine lines and firmness build gradually.