Cosmetic and dermatological preparation based on magnetically hard particles
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United States of America Patent
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Oct 5, 1999
Grant Date -
N/A
app pub date -
Mar 4, 1998
filing date -
Apr 10, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a cosmetic and dermatological preparation for treating sensitive tissue, wounds and hair. The preparation contains (a1) magnetically hard particles such as barium or strontium hexaferrite single crystals, samariumcobalt particles (SmCo) and neodymium-iron-boron particles (Nd.sub.2 Fe.sub.14 B), each with a particle size in the range of 80 to 550 nm, and with a coercive field strength of the particles in the range of 1,000 to 20,000 Oerstedt; or (a2) particles according to (a1), encapsulated in aqueous liposomes or asymmetrical lamellar aggregates, where the aggregates consist of fluorocarbons and natural phospholipids with a phosphatidylcholine content of 30 to 99 wt %; and separately in addition to (a1) or (a2) or mixtures thereof, it also contains asymmetrical lamellar aggregates without encapsulated particles which are loaded with oxygen to the saturation limit. In addition, it also contains excipients and optionally other cosmetic or pharmacological active ingredients.
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