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In vivo investigations on the penetration of various oils and their influence on the skin barrier
- A. Patzelt, J. Lademann, M. Hauser
- ChemistrySkin research and technology : official journal…
- 1 August 2012
The skin represents a potent barrier to the environment, which can be enhanced by the topical application of skin care products, such as oil and oil‐based formulations by moisturizing the skin.
Penetration and storage of particles in human skin: perspectives and safety aspects.
Comparison of two in vitro models for the analysis of follicular penetration and its prevention by barrier emulsions.
Cutaneous concentration of lycopene correlates significantly with the roughness of the skin.
Sunscreen application at the beach
Background The sun protection factor (SPF) of sunscreens is determined after application of a standard amount. The European Cosmetic Toiletry and Perfumery Association (COLIPA) standard amount is 2…
In vivo photoprotective and anti-inflammatory effect of hyperforin is associated with high antioxidant activity in vitro and ex vivo.
Radical Protection by Sunscreens in the Infrared Spectral Range
- M. Meinke, S. Haag, S. Schanzer, N. Groth, I. Gersonde, J. Lademann
- PhysicsPhotochemistry and photobiology
- 1 March 2011
Four different, commercially available sunscreens and one COLIPA standard are investigated with regard to radical formation in the skin after IR irradiation, using electron paramagnetic resonance spectroscopy to investigate their influence on the radical protection of the skin.
Comparison of human and porcine skin for characterization of sunscreens.
The comparison of the USPF obtained for human and porcine skin results in a linear relation between both USPF values with a correlation factor R(2)=0.98, demonstrating the possibility for the use of porcines skin to determine the protection efficacy of sunscreens.
Water-filtered infrared-A (wIRA) can act as a penetration enhancer for topically applied substances
The better penetration of the hydrophilic dye fluorescein after or during skin irradiation can be explained by increased hydration of the stratum corneum by irradiation with wIRA, which can be used to improve the penetration of substances before or after application of substances.
Pathways of Lateral Spreading
The local distribution and lateral spreading of the UV filter substance butyl methoxydibenzoylmethane applied in an o/w emulsion was studied on the forearm and the back and a preferred direction of lateral spreading parallel to the body axis was observed.