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Cream formulation improved skin-lightening effect of ginsenoside Rh1, Rg2, and Hydrangea macrophylla flower extract

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Abstract

Purpose

The aim of this study was to evaluate the synergistic effect of ginsenoside Rh1, Rg2, and Hydrangea extract on skin-lightening and to assess the skin-lightening effect of cream formulation containing these three substances.

Methods

To investigate the skin-lightening effects, we evaluated the inhibitory effects of three substances (ginsenosides Rh1, Rg2, and Hydrangea extract) on tyrosinase (TYR) activity in melanocytes (SK-MEL-2 cells) and pigmentation in a three-dimensional (3D) artificial skin model. Skin permeability was compared between a cream formulation and a solution containing ginsenosides Rh1, Rg2, and Hydrangea extract on a 3D artificial skin model.

Results

The combination of ginsenosides Rh1, Rg2, and Hydrangea extract reduced the activity of TYR and inhibited the synthesis of melanin more effectively than each component alone. When these three active compounds were loaded into an Absolute® cream base, the skin permeability was improved compared to the solution formulation. Addition of flower extract to the cream formulation also increased the permeability of ginsenoside Rh1 measured in the donor chamber, skin, and receptor chamber after the application of the cream formulation (60.2 ± 9.4%, 3.4 ± 0.4% and 36.4 ± 19.0%, respectively) and the solution formulation (67.7 ± 7.6%, 4.4 ± 0.4% and 27.9 ± 8.3%, respectively).

Conclusion

The results showed that the combination of ginsenosides Rh1, Rg2, and Hydrangea extract increased the permeability and efficacy of Rh1.

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Funding

This research was supported by SMtech Development Program, MSS, Republic of Korea (c0564927).

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Correspondence to Kyung-Sun Heo or Jeong-Sook Park.

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Conflict of interest

All authors (D.‑H. Kim, T.N. Nguyen, Y. Jin, N. Baek, S.Y. Back, S. Sim, K.‑S. Heo, and J.‑S. Park) declare that they have no conflict of interest.

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This article does not contain any studies in human and animal subjects.

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Kim, DH., Nguyen, T.N., Jin, Y. et al. Cream formulation improved skin-lightening effect of ginsenoside Rh1, Rg2, and Hydrangea macrophylla flower extract. J. Pharm. Investig. 53, 527–538 (2023). https://doi.org/10.1007/s40005-023-00620-3

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  • DOI: https://doi.org/10.1007/s40005-023-00620-3

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