Compounds of the formula I wherein A is a compound of the formula II or III ##STR1## m is a rational number between 0.1 and 4.0, and B is H.sub.2 O.sub.2, N.sub.2 H.sub.4 or NH.sub.2 OH, and R.sub.1 is an unsubstituted or substituted aliphatic or aromatic hydrocarbon radical which has 3-30 C atoms and which can be interrupted by oxygen or sulfur atoms, R.sub.2 is hydrogen or C.sub.1 -C.sub.30 alkyl, X is --O-- or --SO.sub.2 -- and, in the case where B is N.sub.2 H.sub.4 or NH.sub.2 OH, also --S-- or --SO--, Y is the direct bond, ##STR2## Q is --CH.sub.2, --CH(OH)--CH.sub.2 -- or --CH(CH.sub.2 --OH)--, and n is 1, 2, 3, 4, 5, 6, 7 or 8.
A water-in-oil type cosmetic composition comprising a cosmetic oil base material, water and a specific emulsifier are disclosed. The specific emulsifier comprising the following three components: (1) 94 to 43% by weight of .alpha.-mono(methyl-branched alkyl) glyceryl ether represented by the formula (I): where, R is a methyl-branched saturated hydrocarbon group having 14 to 20 carbon atoms; (2) 0.4 to 9.8% by weight of a multi-valent metal salt of a saturated or unsaturated aliphatic acid having 10 to 22 carbon atoms; and (3) 8 to 54% by weight of at least one inorganic or organic salt having a solubility in water of at least 0.2 g per 100 g of water at 20.degree. C.
.alpha.-mono(methyl-branched alkyl) glyceryl ethers represented by the formula ##STR1## where m is an integer of 2 to 14, n is an integer of 3 to 11, and the total of m+n is 11 to 17, are disclosed along with skin care compositions containing the same as emulsifiers.
Hydroxylamine solutions stabilized using tri(4-(2,3-dihydroxyphenyl)-4-oxabutyl)amine, tri(4-(2,3-dihydroxyphenyl)-4-keto-3-azabutyl)amine or salts thereof, and methods of stabilizing hydroxylamine solutions using these compounds.
