Method and apparatus for providing a stratified charge of two constituents in the combustion chamber of an internal combustion engine when the engine is operated at less than full load to reduce all three undesirable exhaust emissions, i.e., hydrocarbons, carbon monoxide and oxides of nitrogen. One constituent of the stratified charge comprises exhaust gas, mixed with air if desired; and the other a fuel/air mixture, having exhaust gases mixed therewith if desired, to produce reduced quantities ...

The invention relates to a process for preparing fine-particled, stable, pharmaceutical or cosmetic dispersions which comprises dispersing the entire inner phase in 5-40% by volume of outer phase, then adding the remainder of the outer phase, all under predetermined conditions.

A sunscreening composition which comprises a sunscreening amount of a .DELTA..sup.5,7 steroidal diene and a topical carrier, with the proviso that the .DELTA..sup.5,7 steroidal diene is not a precursor to a biologically active vitamin D compound.

A cosmetic composition comprising at least one fluorocarbon having the formula C.sub.n H.sub.p F.sub.q X.sub.4 wherein X represents chlorine or bromine, n is an integer of 1 to 8, q is an integer of 1 to 18, and p+q+r is an 2n+2, which is liquid at an ambient temperature and has a boiling point of 200.degree. C. or less, in the composition. This cosmetic composition does not exhibit an unpreferable oily feeling finish but does exhibit a cosmetic finish which lasts for a long time.

Cosmetic sunscreen products which contain a tyrosine derivative of the formula: ##STR1## in which R.sub.1 is H or CH.sub.3 --(CH.sub.2).sub.x, with X being 1 to 20, and R.sub.2 is CH.sub.3 CO-- or CH.sub.3 --(CH.sub.2).sub.y --CO, with Y being 1 to 20, provide a long lasting and dark, natural tan after a short exposure to sunlight. The sunscreen product may contain an activator which is an alkali metal or alkaline earth metal salt of adenosine-5'-tri-, di-, or monophosphoric acid and mixtures th...

Aminated aldehydes are usefully employed in cosmetic compositions to tan the skin.

The present invention relates to a method of darkening the skin by topically applying to the skin a peptide and compositions containing such peptides.

The disclosed invention is directed to methods and compositions for improving the rate, extent and lifetime of an artificially induced tanning of the human skin. The invention entails treating the skin with agents such as amino acids, dipeptides, and amino substituted containing polymers either prior to or simultaneously with application of dihydroxyacetone.

Two specific diesters of neopentyl glycol used in varying combinations are introduced as replacements for mineral oil in cosmetic formulations which increases SPF of the formulations, are unusually safe even when used neat, have zero comedogenicity and mimic mineral oil in all of its good physical and chemical properties.

Methods and compositions are described which are useful for increasing the peripheral blood flow in mammals during conditions of hemodilution. The methods and compositions involve the use of materials to increase the blood viscosity in the system of microscopic blood vessels.