The quest for natural, effective ingredients in anti-ageing skin care has led researchers to investigate the potential of peony callus extract (PCE). PCE, derived from the callus tissue of peony plants, has garnered attention for its remarkable ability to soothe skin inflammation, repair DNA damage, and boost collagen production.
How does PCE work?
To unravel the mysteries of PCE, researchers employed both human and laboratory studies. The focus was on the extract’s capacity to down-regulate key inflammatory factors, triggered by UVB radiation, a major cause of premature skin ageing. UVB radiation activates pro-inflammatory markers in skin cells, leading to redness, swelling, and pain.
- Lab tests on HaCaT (high sensitivity of human epidermal keratinocytes) cells exposed to UVB radiation showed elevated levels of inflammatory genes.
- The cells displayed a marked decrease in expression when treated with PCE at concentrations of 0.5% and 1%.
- A small concentration (0.1%) of PCE reduced histamine release by nearly 74%, indicating its potential to calm irritated skin and reduce allergic responses.
Repairing DNA damage and slowing ageing
UVB radiation causes breaks in skin cell DNA, visualized as a ‘comet tail’ in laboratory assays. In the study, UVB exposure increased DNA damage indicators by several folds.
- The ‘comet assay’ revealed shorter tail lengths, lower percentages of tail DNA, and reduced overall DNA moments, indicating significant DNA damage reduction.
- Fibroblasts, the cells that produce collagen in the skin, underwent tests. UVB radiation boosted the production of enzymes known as matrix metalloproteinases (MMPs), breaking down collagen and contributing to wrinkles and loss of skin elasticity.
- PCE suppressed the expression of three types of MMPs, protecting the skin’s structural integrity by reducing collagen degradation.
Boosting collagen in human skin
Beyond laboratory experiments, the study extended its findings to a real-world scenario. Researchers recruited 13 healthy volunteers to test a cosmetic formulation containing 1% PCE.
| Timepoint | Collagen Increase (%) |
|---|---|
| 1 week | 5.58% |
| 2 weeks | 7.11% |
| 4 weeks | 9.35% |
The results showed that the PCE formulation led to significant increases in collagen production over 28 days.
Sustainable and safe for modern manufacturing
The study highlighted an important advantage: the use of peony callus tissue over traditional plant extraction methods. This approach allows for continuous, controlled plant cell production, reducing environmental strain.
- Cytotoxicity Tests
- Even at concentrations of up to 1%, PCE did not exhibit cytotoxic effects, indicating its safety for long-term use.
The researchers concluded that PCE offers a sustainable and safe ingredient for modern manufacturing, meeting the growing demand for natural and effective skin care solutions.
The promise of peony
The study’s breakthrough in using tree PCE represents a promising development in the fight against UVB-induced skin damage. The findings suggest PCE can play a crucial role in reducing inflammation, repairing DNA, and boosting collagen production. For the cosmetics industry, this extract offers a safe and sustainable ingredient that meets the growing demand for natural and effective skin care solutions. “PCE could soothe skin inflammation and enhance resilience against ageing factors. The superior function of the extracts highlights its potential as a key ingredient in cosmetic formulations designed to promote skin health and vitality.” – The researchers.
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