US2003170280A1PendingUtilityA1

Dermatological composition

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Priority: Aug 18, 2000Filed: Aug 15, 2001Published: Sep 11, 2003
Est. expiryAug 18, 2020(expired)· nominal 20-yr term from priority
Inventors:Leigh CanhamRoger Aston
A61P 39/00Y10T428/2982A61P 17/06A61P 17/10A61P 17/00A61P 17/16A61Q 17/04A61K 8/25A61Q 19/00A61P 17/14A61P 17/08A61K 33/00A61P 17/02A61K 2800/56
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Claims

Abstract

The invention relates to dermatological compositions comprising a multiplicity of particles, at least one of the particles comprising porous and/or polycrystalline silicon. The dermatological compositions covered by the invention include compositions for sun protection applications. The use of porous silicon, polycrystalline silicon, and porous silicon oxide mirrors is disclosed.

Claims

exact text as granted — not AI-modified
1 . A dermatological composition comprising a multiplicity of particles, at least one of the particles comprising porous and/or polycrystalline silicon.  
     
     
         2 . A dermatological composition according to  claim 1  wherein the composition further comprises a dermatologically acceptable carrier.  
     
     
         3 . A dermatological composition according to  claim 1  wherein the porous/and or polycrystalline silicon is resorbable.  
     
     
         4 . A dermatological composition according to  claim 1  wherein the composition comprises derivatised porous silicon.  
     
     
         5 . A dermatological composition according to  claim 1  wherein the composition comprises porous silicon oxide.  
     
     
         6 . A dermatological composition according to  claim 1  wherein at least part of the porous silicon has been oxidised to form silicon oxide.  
     
     
         7 . A dermatological composition according to  claim 1  wherein the composition comprises a multiplicity of mirrors, each mirror comprising a plurality of layers, each layer comprising porous silicon.  
     
     
         8 . A dermatological composition according to  claim 7  wherein the composition comprises a plurality of groups of mirrors, each group reflecting radiation over a wavelength range that differs from that of the other groups.  
     
     
         9 . A dermatological composition according to  claim 1  wherein the composition further comprises at least one beneficial substance.  
     
     
         10 . A dermatological composition comprising a multiplicity of silicon oxide mirrors, each oxide mirror comprising a plurality of layers, each layer comprising porous silicon oxide.  
     
     
         11 . A dermatological composition according to  claim 10  wherein composition comprises a plurality of groups of mirrors, each group reflecting radiation over a wavelength range that differs from that of the other groups.  
     
     
         12 . A dermatological composition according to  claim 10  wherein at least one of said mirrors comprises resorbable porous silicon oxide.  
     
     
         13 . A dermatological composition according to  claim 10  wherein the composition further comprises at least one beneficial substance.

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