568 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table IV Low pH Quaternary Shampoo Amphoteric-10 30.00 TEA w Lauryl Sulfate (40%) 8.00 Quaternary (10% active Solution) 30.00 Lauramide DEA 5.00 Propylene Glycol 6.50 Deionized Water 20.20 Perfume 0.30 PROCEDURE: 100.00 Heat and mix the first four ingredients to 70øC until clear and homogeneous. Let cool and adjust the pH to 5.0 with lactic acid. Add perfume--the mass is now cloudy. Add the propylene glycol and mix until clear, Add the rest of the water. Two shampoos were prepared. The first contained the LanES quaternium and the other contained Quaternium 7. Half-head studies involving 6 subjects were employed to evaluate the shampoos. The right side was reserved for the LanES shampoo and the left side for the Quaternium 7 shampoo. The subiects were all females in their mid-teens with shoulder length or longer virgin hair. Experiments were performed in the beauty salon of a well known testing agency. In the procedure used, the hair of the subject was first examined for color, texture, condition, and length. The hair was parted in the middle and combed out. One side was wetted, then washed with a measured amount of one of the shampoos. The other side was also wetted and washed with a measured amount of the other shampoo. At this point, foam quality and quantity were observed. Then the head was rinsed and washed again in the same manner. After the final rinse, the hair was evaluated with a wet comb. The tangles were combed out with the large teeth of a comb and then with the small teeth. Ease of combing, hair conditioning effects, and slip were then evaluated by the subiect, operator, and observer. The hair was set with rollers and the subject was placed under the dryer until the hair was thoroughly dry. After completion of the drying, the rollers were removed and the hair was combed out. The hair was again evaluated by the subject, operator, and observer for conditioning, sheen, manageability, softness, degree of static charge, cud re- tention, and any other properties which appeared to be either exceptional or poor.

NEW LANOLIN QUATERNARY SALTS 569 Table V Quaternary Creme Rinse Quaternary (10% active solution) Glycerol Stearate, SE, acid stable Hydroxypropyl Methylcellulose (1% solution) Deionized Water Perfume WT.% 30.00 1.50 40.00 28.00 0.50 100.00 PROCEDURE: Heat the GMS and water together to 75øC and let cool to 30øC with slow continual stirring. Add the other ingredients and package. pH was adjusted to 5.5 with Lactic Acid. Results--In all 6 cases, the 2 shampoos used were very similar as far as foam quality and quantity are concerned. If anything, the right (LanES) side pro- duced a tighter bubble, which gave the appearance and feel of a thicker creamier lather. Both shampoos rinsed equally well. During the wet comb evaluation, the left side (Quaternium 7) excelled. In 4 cases out of 6, the left side combed out easier with less tangles and had more slip, which allowed the comb to glide through the hair easier. After comb out, the right (LanES) side generally felt as if it had a slightly greasy film remaining. After setting and drying, the right (LanES) side was preferred for sheen, manageability, and body. Both shampoos controlled fly away well in only one case, the subject preferred her right over her left side in the fly away evalu- ation. In general, marked distinctions between the two shampoos did not exist. Differences were very small in most cases, thus showing the LanES to be as effective as the Quaternium 7. Creme Rinse-The formula employed for this study was simple but effec- tive in pointing out the differences between the LanBAC and the Stearal- konium Chloride. The formula is shown in Table V. The small percentage of gum was added to provide a viscosity sufficient to improve the formula's stability. Experimental-Half-head tests were employed to evaluate the two products. Six females in their mid-teens, with long virgin hair were used. The hair was washed twice with a commercial bland shampoo, then parted in the middle of the head. The Stearalkonium Chloride creme rinse was used on the left side and the LanBAC creme rinse was used on the right side. The rinses were di- luted 10 to 100 ml at the salon and applied to the hair. The full 100 ml was