Raman spectroscopic analysis of skin penetration and moisturizing effects of Bionics vernix caseosa cream compared with Vaseline

Dendrobium officinale flowers' topical extracts improve skin oxidative stress and aging

BACKGROUND

Dendrobium officinale flowers (DOF) have the effects of antiaging and nourishing yin, but it lacks pharmacological research on skin aging.

OBJECTIVE

Confirming the role of DOF in delaying skin aging based on the "in vitro animal-human" model.

METHODS

In this experiment, three kinds of free radical scavenging experiments in vitro, D-galactose-induced aging mouse model, and human antiaging efficacy test were used to test whether DOF can improve skin aging through anti-oxidation.

RESULTS

In vitro experiment shows that DOF has certain scavenging effect on 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical, hydroxyl free radical, and superoxide free radical, and its IC50 is 0.2090 μg/mL, 15.020, and 1.217 mg/mL respectively. DOF can enhance the activities of T-AOC, SOD, CAT, and GSH Px in the serum of aging mice, increase the content of GSH, and reduce the content of MDA when administered with DOF of 1.0, 2.0, and 4.0 g/kg for 6 weeks. In addition, it can enhance the activity of SOD in the skin of aging mice, increase the content of Hyp, and decrease the content of MDA, activated Keap1/Nrf2 pathway in the skin of aging mice. Applying DOF with a concentration of 0.2 g/mL on the face for 8 weeks can significantly improve the skin water score and elasticity value, reduce facial wrinkles, pores, acne, and UV spots, and improve the facial brown spots and roughness.

CONCLUSION

DOF can significantly improve skin aging caused by oxidative stress, and its mechanism may be related to scavenging free radicals in the body and improving skin quality.

Developing Criteria for Asian Facial Skin Health Status Based on a Non-Invasive Skin Test: The Delphi Process

Objective

We aimed to develop a set of facial skin health criteria, combined with skin characteristics, and then determine two levels of skin condition and skin problems.

Methods

Through a literature study and group discussion, an expert consultation index system was initially formed. The Delphi method was used to conduct two rounds of expert opinion consultation. The index was revised, supplemented and reduced based on the experts’ ratings and feedback, and the expert score was calculated. The authority and enthusiasm of the experts and the coordination of the expert opinions finally resulted in a new facial skin Health evaluation index system.

Results

The first-level indicators are skin problems and skin condition, the second-level indicators are detailed descriptions, and the third-level indicators are indicators that can be measured by an instrument.

Conclusion

The construction of this system can be used to quantitatively evaluate the health status of facial skin with the help of commonly used skin measuring instruments. This scientific and reasonable facial skin health evaluation index system allows people to have an objective and accurate understanding of their own facial skin health and to gradually improve their facial skin health under monitorable conditions.