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Materials and methods utilizing a temporary visual indicator

  • US 5,523,075 A
  • Filed: 05/13/1993
  • Issued: 06/04/1996
  • Est. Priority Date: 05/13/1993
  • Status: Expired due to Fees
First Claim
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1. A cosmetic composition which can be applied to the skin to modify the effects of solar radiation, wherein said composition comprises:

  • (a) an effective amount of a first ingredient which, when applied to the skin changes its chemical form, thereby causing the pH of the composition to change from a first pH to a second pH; and

    (b) an effective amount of a second ingredient which can be seen at first pH and which becomes colorless at said second pH to give a visual indication of said pH change of the composition said second ingredient is 3,3-bis [4-hydroxyphenyl]-1-[3H]-isobenzofuranone.

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