Clinical study highlights novel cosmetic agent to protect skin barrier function

By Stephen Daniells

- Last updated on GMT

© RealPeopleGroup / Getty Images
© RealPeopleGroup / Getty Images

Related tags Moisturizer skin barrier

Japanese scientists have reported that the compound 2-aza-8-oxohypoxanthine (AOH) may protect against water loss from the skin and act as a moisturizing agent in topical cosmetic formulations.

Data published in Cosmetics​ indicated that a lotion formulated with 0.1% AOH led to statistically significant larger decrease in trans-epidermal water loss (TEWL) after eight weeks compared to placebo.

In addition, larger increases in the moisture content in the stratum corneum were reported for the AOH formulation, wrote scientists from Vitamin C60 BioResearch Corp in collaboration with researchers from Shizuoka University.

“This study is the first report to show that AOH has the effect of decreasing TEWL,” ​they wrote.

Building the science

The Japan-based scientists note that this study expands on earlier DNA microarray research, which found that AOH “increased the expression levels of genes involved in skin barrier functions such as intercellular adhesion, stratum corneum exfoliation, and differentiation induction in a concentration-dependent manner”.

“The expression level of HAS3, a type of hyaluronic acid synthase, also increased in a concentration-dependent manner with the addition of AOH, suggesting its moisturizing effect,” ​they said.

To test an AOH formulation in human subjects, the researchers recruited 20 Japanese adults with an average age of 48 to participate in their a double-blind, placebo-controlled, split-face comparative trial. Skin moisture content was assessed at the start and end of the eight-week study.

The results showed that the AOH lotion led to statistically significant decrease in TEWL, compared to the placebo. While the water content of the stratum corneum was found to increase after AOH application, the difference with the placebo did not reach statistical significance.

“These results indicate that the lotion containing 0.1% AOH had a moisturizing function, as well as a barrier-function-improving or strengthening effect, compared to the placebo lotion,” ​they wrote.

Importantly, the researchers did not find any adverse events to be causally linked to AOH during the study.

“Based on the results of clinical trials and DNA microarrays, AOH may be a promising cosmetic ingredient for maintaining homeostasis of the skin barrier function. However, the mechanism by which AOH increases the expression levels of barrier function-related gene groups remains to be elucidated,” ​wrote the researchers.

Source: Cosmetics
2021, 8​(3), 83; doi: 10.3390/cosmetics8030083
“Clinical Evaluation of Topical Lotion Containing 2-Aza-8-Oxohypoxanthine on Skin Barrier Function against Water Loss”
Authors: H. Aoshima et al.

Related products

show more

Calendula Cellular Elixir: Alchemy in a cell

Calendula Cellular Elixir: Alchemy in a cell

Content provided by Naolys | 24-Apr-2024 | Product Brochure

Get ready to experience a cellular evolution in skincare with InnerLift Calendula's advanced Plant Cell biotechnology.

See our latest innovations in personal care

See our latest innovations in personal care

Content provided by Covation Bio™ PDO | 02-Apr-2024 | White Paper

At CovationBio PDO, we’re helping the world achieve its sustainability goals by enabling better performing, better-for-the planet products across a range...

Collagen Reimagined, Discover Biodesigned Type XXI

Collagen Reimagined, Discover Biodesigned Type XXI

Content provided by Geltor | 20-Mar-2024 | Product Brochure

Collagen is the body’s most abundant protein and a mainstream ingredient for beauty. Type XXI collagen transcends a common protein into a powerful bioactive

Empowering natural barrier function for future-proof skin

Empowering natural barrier function for future-proof skin

Content provided by Lucas Meyer Cosmetics | 14-Mar-2024 | White Paper

Corneopeptyl™ is a new patented peptide biomimetic to the LCE6A protein, obtained by green chemistry-based synthesis. By mimicking the LCE6A protein activity,...

Related suppliers