de Almeida IDAA, Honório TDS, do Carmo FA, de Freitas ZMF, Simon A, Rangel Rodrigues C, Pereira de Sousa V, Cabral LM, de Abreu LCL. Development of SEDDS formulation containing caffeine for dermal delivery.
Int J Cosmet Sci 2023;
45:255-265. [PMID:
36752036 DOI:
10.1111/ics.12841]
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Abstract
OBJECTIVE
The objective of this work was to develop a self-emulsifying drug delivery system (SEDDS) containing caffeine for the treatment of cellulite.
METHODS
SEDDS were prepared using the solution method. 0.5% (w/v) caffeine was added to the previously selected excipients. The system was characterized by droplet size, zeta potential, emulsification time and long-term stability. In vitro release and skin permeation were investigated using Franz-type diffusion cells. The cytotoxicity was evaluated on normal human keratinocytes.
RESULTS
Caffeine SEDDS were thermodynamically stable, with a zeta potential less than - 22 mV and droplet size around 30 nm, and were long-term stable. The permeation study showed that the formulation promoted caffeine accumulation in the skin layers, suggesting an increase in local circulation. Cytotoxicity studies on HaCaT cells were not conclusive as the surfactant used indicated false-positive results due to its high molar mass.
CONCLUSION
It was possible to obtain a stable SEDDS that could cause an increase in blood flow in the applied area, resulting in cellulite reduction.
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