| abstract |
WHERE R1 and R2 are independently straight or branched chain lower alkyl; Y is C2-C6 alkylene; X is R3-COO , HOOC-R4-COO or OOC-R4-COO , where R3 is alkyl of 1 to 18 carbon atoms and R4 is alkylene of 1 to 18 carbon atoms; and n is 1 when X is R3-COO or HOOC-R4-COO or n is 2 when X is OOC-R4-COO . Sun-screening compositions containing such compounds and a cosmetically acceptable diluent or carrier, and methods of using such compositions, are also disclosed. Sun-screening compounds, useful to protect the skin and hair against deleterious effects upon exposure to ultraviolet radiation, of the formula: |