Collinsonia Canadensis Extract: 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 24, 2025
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All information on this page is verified using publicly available nomenclature standards and reference materials from The Personal Care Products Council (PCPC) and the European Commission's CosIng database. Our analyses are based on technical data from these sources to ensure accuracy and reliability.

What Is Collinsonia Canadensis Extract?

Collinsonia Canadensis Extract comes from the leaves and roots of Stoneroot, a mint family plant native to eastern North America. The plant is rich in natural tannins and rosmarinic acid, two compounds that give it a mild tightening action on skin. Native communities once used Stoneroot preparations for topical tonics, and 19th-century herbalists later carried this practice into early beauty balms. Modern cosmetic labs make the extract by drying the plant material, grinding it, then soaking it in a blend of water and safe food-grade solvents. The liquid is filtered and concentrated into a stable solution that can be dosed precisely in formulas. You will most often see Collinsonia Canadensis Extract in toners, clarifying masks, after-shave lotions, light gel moisturizers and pore-refining serums where a fresh, tightened feel is desired.

Collinsonia Canadensis Extract’s Cosmetic Benefits/Uses

In skin care its role is straightforward yet valuable.

  • Astringent: Helps draw together skin proteins so pores look smaller, surface oil feels reduced and the complexion appears smoother. This tightening sensation can leave skin feeling refreshed, making the extract a popular choice in products aimed at oily or combination skin

Who Can Use Collinsonia Canadensis Extract

Because its main action is gentle tightening, Collinsonia Canadensis Extract is generally best for oily, combination and normal skin. Dry or very sensitive complexions might find it a bit too drying if the formula is loaded with other oil-reducing ingredients, so look for products that balance it with soothing humectants if your skin leans that way.

The extract is plant derived with no animal by-products or animal processing aids, making it suitable for vegans and vegetarians.

No specific studies flag risks for pregnant or breastfeeding women when the ingredient is used on skin, still safety data is limited. This content is not medical advice. Anyone who is pregnant or nursing should ask a healthcare professional before adding new skincare products, just to be safe.

Collinsonia Canadensis Extract is not known to increase photosensitivity, so it will not make skin more prone to sunburn. Regular daily sunscreen is still recommended as part of any routine.

Potential Side Effects/Adverse Reactions

Responses to topical Collinsonia Canadensis Extract vary from person to person. The points below list possible but unlikely reactions when the ingredient is used at normal cosmetic levels.

  • Dryness or tightness if used in high-strength formulas or layered with other astringents
  • Mild stinging on very freshly shaved or broken skin
  • Redness or itching in individuals with an allergy to plants in the mint family
  • Worsening of existing eczema or dermatitis if the skin barrier is already compromised

If irritation or any unexpected reaction occurs stop using the product and consult a qualified healthcare professional.

Comedogenic Rating

Rating: 1 (low)

Collinsonia Canadensis Extract contains mostly water soluble tannins and phenolic acids rather than heavy oils or waxes, so it sits lightly on skin and rinses away cleanly. Because it does not leave a greasy film it is unlikely to block pores in most users. For anyone prone to acne or frequent breakouts this ingredient is generally considered safe to use, provided the overall formula is also low in pore-clogging components. As with any astringent, overuse can dehydrate skin which may prompt some people to produce more oil, so moderation is key.

Summary

Collinsonia Canadensis Extract is valued in cosmetics for one straightforward job: it acts as a gentle astringent that helps temporarily tighten skin, refine the look of pores and cut down surface shine. It performs these tasks thanks to its natural mix of tannins and rosmarinic acid, compounds that bind lightly with skin proteins and create a quick smoothing effect.

Despite its long folk history the extract is still a niche player compared with more famous botanicals like witch hazel or green tea. You will mostly spot it in targeted toners, lightweight gels and after-shave products that aim for a fresh no-residue feel.

Safety data show few concerns at normal cosmetic levels. The plant origin makes it suitable for vegan formulas and it does not raise sun sensitivity. Still, every skin is different, so give any new product a short patch test before using it across your face or body.

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