ABSENCE OF EFFECTS OF DIMETHICONE ON HAIR LOSS 203 • • ... 000 000 000 000

204 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Table III Mean Product Use Frequency and Consumption Dimethicone- Non-dimethicone- Dimethicone- containing containing containing 2-in- 1 shampoo shampoo shampoo (129) A? 138 B? (137) C? Mean number of uses of product over the study during treatment period 15.5 Mean frequency of product use per week 3.9 Mean total product consumption in gm 212.7 Mean consumption express as gm/use 14.8 16.1 16.0 4.0 4.0 259.9 A 266.8 A 17.6 A 18.6 A ? A denotes that significantly less dimethicone 2-in-1 shampoo is consumed (p • 0.05) in comparison to the other two shampoos. Table IV Differences in Hair and Scalp Perception Baseline to Posttreatment Periods Shampoo I Shampoo II Shampoo III Attribute rated** (A)* (B)* (C)* A. Hair effects Hair health (healthy/not healthy) 0.55 C 0.43 Fluffiness of hair (not fluffy/flyaway) 0.35 B -0.16 Damage (not damaged/damaged) 0.25 0.40 Manageability (not manageable/manageable) 0.08 - 0.06 Thickness of hair (thin/thick) 0.12 0.26 Texture of hair (fine/coarse) 0.20 0.14 Body of hair (no weight/lots of weight) - 0.45 - 0.36 Dryness/oiliness (dry/oily) - 0.28 - 0.26 B. Scalp effects -0.01 - 0.04 0.43 -0.10 0.44 0.12 -0.38 -0.20 Scalp health 0.3 0.3 0.2 Hair fall 0.2 0.3 0.06 Dandruff 0.7 0.9 C 0.4 Scalp itch 0.7 0.8 0.6 Scalp dryness 0.2 0.7 C 0.04 Scalp irritation 0.1 0.1 - 0.1 * The notations A, B, C denote that the following treatments, when compared to other treatment regi- mens, are significantly different at p • 0.05. A = Dimethicone-containing 2-in-1 shampoo. B = Non-dimethicone-containing shampoo. C = Dimethicone-containing shampoo. ** Rating based on a 0-to-7-point scale used both at the baseline and posttreatment evaluations. Moderately healthy Healthy Not healthy A positive difference in score from baseline to posttreatment indicates that the product is rated better at posttreatment as compared to pretreatment.