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Related Experiment Video

Updated: Jul 5, 2026

Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications

Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications

Published on: November 17, 2015

A novel sunscreen system based on tocopherol acetate incorporated into solid lipid nanoparticles.

S A Wissing¹, R H Müller

¹Department of Pharmaceutics, Biopharmaceutics and Biotechnology, The Free University of Berlin, Kelchstr. 31, D-12169 Berlin, Germany.

International Journal of Cosmetic Science

|May 24, 2008

Summary

Solid lipid nanoparticles (SLN) enhance sunscreen efficacy. Incorporating tocopherol acetate into SLN significantly boosts UV protection, offering a superior skincare formulation with fewer side effects.

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Solid Lipid Nanoparticles (SLNs) for Intracellular Targeting Applications

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Published on: November 17, 2015

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PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

Published on: December 27, 2013

Area of Science:

Nanotechnology
Cosmetic Science
Dermatology

Background:

Solid lipid nanoparticles (SLN) are emerging as advanced carriers for drugs and cosmetics.
SLN exhibit inherent physical UV-blocking properties, suggesting potential for enhanced sunscreen formulations.
Chemical sunscreens like tocopherol acetate can degrade and lose efficacy.

Purpose of the Study:

To evaluate the UV-blocking efficacy of SLN dispersions.
To investigate the impact of incorporating tocopherol acetate into SLN.
To assess the performance of SLN-based sunscreen and skincare formulations.

Main Methods:

Aqueous SLN dispersions were prepared and incorporated into gel formulations.
Particle size, stability, and thermoanalytical properties were examined.
In vitro techniques were used to assess UV-blocking capacity, film formation, and occlusivity.

Main Results:

SLN dispersions demonstrated at least twice the UV-blocking efficacy of conventional emulsions.
Placebo SLN exhibited higher UV-blocking efficacy than emulsions with tocopherol acetate.
Incorporating tocopherol acetate into SLN resulted in an overadditive UV-blocking effect and improved film formation.

Conclusions:

SLN offer a promising platform for developing highly effective sunscreen formulations.
Combining SLN with tocopherol acetate significantly enhances UV protection and skin benefits.
SLN-based formulations represent an improved approach to sunscreen and skincare products.