| 摘要 |
A cosmetic foundation composition is provided having a DeltaL<SUB>T </SUB>value greater than or equal to 3.5, preferably greater than or equal to 4.5, more preferably greater than or equal to 5.0, where DeltaL<SUB>T </SUB>is measured according to the following equation: <?in-line-formulae description="In-line Formulae" end="lead"?>DeltaL<SUB>T</SUB>=DeltaL<SUB>2</SUB>-DeltaL<SUB>1</SUB><?in-line-formulae description="In-line Formulae" end="tail"?> Where: <?in-line-formulae description="In-line Formulae" end="lead"?>DeltaL<SUB>1</SUB>=L<SUB>1</SUB><SUP>110</SUP>-L<SUB>1</SUB><SUP>15</SUP>;<?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>DeltaL<SUB>2</SUB>=L<SUB>2</SUB><SUP>110</SUP>-L<SUB>2</SUB><SUP>15</SUP><?in-line-formulae description="In-line Formulae" end="tail"?> L<SUB>1 </SUB>is a measurement of L<SUP>y </SUP>taken on bare skin, to which no product has been applied; L<SUB>2 </SUB>is a measurement of L<SUP>y </SUP>taken on skin, to which product has been applied; and L<SUP>y </SUP>is the luminosity value at a specific angle, y, from specular.
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