Rumex Occidentalis Extract



Rumex Occidentalis Extract at a glance

  • Flowering plant found throughout western North America
  • Shows promising efficacy on fading the look of dark spots and patchy discoloration
  • Very good source of antioxidants
  • Offers soothing benefits

Rumex Occidentalis Extract description

_Rumex occidentalis_ extract is a rust-colored flowering plant also known as western dock. Native to the western portion of North America, its primary reason for use in skin care is due to its ability to reduce the look of hyperpigmentation from UV exposure. At this time, due to a lack of accumulated data, _Rumex occidentalis_ extract can be considered a good supporting ingredient to use alongside more proven discoloration-reducing ingredients such as vitamin C, niacinamide, and tranexamic acid. Another study done in India on 71 people showed combining 2% _Rumex occidentalis_ with 1% dioic acid produced visible skin lightening that bettered that from daily use of SPF 15 sunscreen; however, this study was conducted by a cosmetics company and its results haven’t been substantiated. _Rumex occidentalis_ is a good source of antioxidants, including quercetin and resveratrol, among many others. These allow it to help defend skin from external aggressors as well as provide natural soothing benefits. Recommended usage levels in skin care range from 1–3%.

Rumex Occidentalis Extract references

  • Frontiers in Medicine, January 2022, pages 1–11
  • Journal of Ethnopharmacology, December 2015, pages 198–228
  • International Journal of Dermatology, November 2014, pages 1,412–1,416

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Ingredient ratings


Proven and supported by independent studies. Outstanding active ingredient for most skin types or concerns.


Necessary to improve a formula's texture, stability, or penetration.


Generally non-irritating but may have aesthetic, stability, or other issues that limit its usefulness.


There is a likelihood of irritation. Risk increases when combined with other problematic ingredients.


May cause irritation, inflammation, dryness, etc. May offer benefit in some capability but overall, proven to do more harm than good.


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Not rated

We have not yet rated this ingredient because we have not had a chance to review the research on it.