Screening cosmetic composition containing a mixture of 1,4-benzenedi (3-methylidene-10-camphosulfonic) acid, partially or completely neutralized, and metal oxide nanopigments
AssigneeL'oreal
InventorsMartine Eteve, Isabelle Hansenne
Life of this patent
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Abstract
The invention relates to a screening cosmetic composition comprising, in a mixture, 0.5 to 10% by weight of metal oxide nanopigments chosen from titanium, zinc, cerium or zirconium oxide or mixtures thereof, with a mean diameter of less than 100 nm, and 0.1 to 10% by weight of 1,4-benzenedi(3-methylidene-10-camphosulfonic) acid or one of its alkali metal, ammonium, amine, alkanolamine, Ca, Zn, Mg, Ba, Al or Zr salts, in a cosmetically acceptable carrier. This composition is useful as composition for protecting the human epidermis or the hair against UV rays or as make-up.
Claims14
A screening cosmetic composition comprising, in a cosmetically acceptable carrier, a cerium oxide nanopigment having with a mean diameter of less than 100 nm but greater than 5 nm, admixed with partially or completely neutralized 1,4-benzenedi(3-methylidene-10-camphosulfonic) acid of formula ##STR4## wherein A represents hydrogen, alkali metal or NH(R).sub.3.sup.+, wherein
- said R's each independently represent hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 hydroxyalkyl or M.sup.n+ /n wherein M.sup.n+ is a polyvalent metal cation wherein n represents 2, 3 or 4.
A process for reducing or inhibiting light-induced reaction of cerium oxide nanopigments exposed to light comprising admixing said cerium oxide nanopigments having a mean diameter less than 100 nm but greater than 5 nm, with partially or completely neutralized 1,4-benzenedi(3-methylidene-10-camphosulfonic) acid.
Dependencies are inferred from the claim text.