352 JOURNAL OF THE SOCIETY OF COSMETIC CHEMIS•:S ALL-PuRPOSE CREAM Oil-in-Water A soft all-purpose cream of glossy texture--this emollient cream is non- whitening on rubbing out. It may be washed off or left on. In either case an emollient non-greasy film is imparted to the skin. Formula No. 5 Acetylated lanolin alcohols (liquid fraction) ..................................... 10.0% Acetylated lanolin ........................................................... 2.0 Diethylene glycol monostearate C .............................................. 2.0 Stearic acid ................................................................. 2.0 Cetyl alcohol ................................................................. 5 Triethanolamine ............................................................. 1.0 Water ...................................................................... 82.5 Preservative and Perfume ..................................................... q. s. Procedure: Add the water containing the water-soluble materials to the melted oils with the temperature of both phases at 85øC. Mix slowly until cool and remix the following day. COLD CREAM This is a very smooth-textured formulation with a whipped cream con- sistency. It has unusually good spreading and cleansing properties as well as excellent stability. Formula No. 6 Acetylated lanolin... or ... Acetylated lanolin alcohols (liquid fraction) ..................................... 1.0% Beeswax .................................................................... 17.0 Mineral oil, 70 vis ........................................................... 45.0 Amerchol L-101 ............................................................. 3.0 Water ...................................................................... 33.0 Borax ...................................................................... 1.0 Preservative and Perfume ..................................................... q. s. Procedure: Add the water containing the water-soluble materials to the melted oils with the temperature of both phases at 85øC. Mix until cool and fill containers. ANHYDROUS PREPARATIONS Brilliantly clear oil solutions are readily formulated with these acetylated lanolin derivatives. The products are clearly soluble in cold mineral oil resulting in prepara- tions which are emollient and also hydrophobic: an obvious advantage where it is desired to protect against wetting. Both the acetylated lanolin and acetylated lanolin alcohol products have been tested for spectral transmittance in the ultraviolet region of the spec- trum with a quartz prism monochromator. The results indicate that these products are not effective sunscreens. However, the use of these products as inclusions in sunscreen preparations is a valuable application since spread, penetration, emollience and hydrophobic activity are advan- tages to be gained. Further tests must be carried out on humans to com- plete their evaluation in sunscreen formulations.

ACETYLATED LANOLIN DERIVATIVES 353 Formula No. 7 Baby Oil or Brilliantine Acetylated lanolin alcohols (liquid fraction)... or ... Acetylated lanolin ........................................................... 5.0% Mineral oil ................................................................. 95.0 Formula No. 8 Sunscreen Oil Acetylated lanolin alcohols (liquid fraction)... or ... Acetylated lanolin .......................................................... 5.0% Sunscreen ................................................................... 2.0 Isopropyl myristate .......................................................... 43.0 Mineral oil .................. ' ............................................... 50.0 Procedure (for both): Where the acetylated lanolin is used heat slightly in the mineral oil until clear. Remove from heat and add the remaining ingredients and mix cold. These formulas are typical anhydrous solutions which remain brilliantly clear. Stable, hazy, colloidal lanolin solutions can also be prepared by combining the acetylated lanolin derivatives with mineral oil and ordinary lanolin. CREAM SHAMPOO The acetylareal products may be added to cream shampoo formulations without reducing foaming as is the case when lanolin U.S.P. is used. Other advantages of using them as superfarting agents are increased softness and manageability of the hair. Formula No. 9 Acetylated lanolin alcohols (liquid fraction)... or ... Acetylated lanolin ....................................................... 2.0% Stearic acid ................................................................ 8.0 Glyceryl monostearate, neutral ................................................ 2.0 Amerchol L-101 ............................................................. 4.0 Veegum, dry ................................................................ 1.5 Duponal WA paste .......................................................... 60.0 Water ...................................................................... 20.0 Triethanolamine ............................................................. 1.5 Sodium hydroxide ............................................................ 5 Potassium hydroxide .......................................................... 5 Preservative ................................................................ q. s. Procedure: Place all ingredients in one container and mix slowly while heating to 80øC. Continue mixing until cool and the desired consistency. Aerosols have become an important factor in the cosmetic and pharmaceu- tical industries. This formulation for a protective hand cream was not developed by us, but by the aerosol laboratory of a perfume company.* The pH of the concentrate is 6.5. Stability and lack of corrosion was es- tablished after sixty days at 100øF., and at --20øF. This product is a glossy white cream which imparts a non-greasy film having interesting protective qualities. The modified lanolin products have applications in lipsticks because of their plasticity, emollience, solubility and penetration effects. Although