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Use of product evaluation areas that are fairly similar across panelists such as the forearms minimizes substrate variability noise in analysis. Many body.

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Presentation on theme: "Use of product evaluation areas that are fairly similar across panelists such as the forearms minimizes substrate variability noise in analysis. Many body."— Presentation transcript:

1 Use of product evaluation areas that are fairly similar across panelists such as the forearms minimizes substrate variability noise in analysis. Many body areas are non-uniform (lashes, elbows, legs, feet), introducing considerable variability by person. How can we test them? Here, feet are the model to show how to test these non-uniform body sites using descriptive analysis. OVERVIEW

2  Feet vary widely in condition, to include lines/cracks, flakes, varying colors, edema, whitened/dry look, and roughness.  Four areas were identified for testing:  Heel (bottom and sides)  Sole (overall)  Toes (inter-digital)  Top (above toes to ankle)  Study objectives determine Test sites Consider the Site(s) for Testing

3 Most descriptive analysis panelists are not screened for foot condition. In addition to standard health screening, the following exclusion criteria apply. For safety, panelists should not have --  Athlete’s Foot or similar  Cracking/oozing between toes  Bleeding/oozing heel cracks  Swollen Feet/Ankles, Edema Exclusion Criteria

4  Reviewed topical foot products including OTC creams, lotions, creams, scrubs, and toners for tactile properties  Collected words from advertising & reviews  Reviewed in-house protocols for hand lotions, facial scrubs and body wash  Selected tactile attributes using existing terminology & scales  Added new references for tactile dry/rough  Added Visual Lines/Cracks attribute  Developed intensity scale using photos Attribute & Reference Development

5 Smooth Soft Silky Healing Dry Moisturizing Relief Cracked GlidesComfortable Not Sticky Not Oily Not Greasy Wrinkles Healing Improves Skin Texture Eases cracked heels Rough Non-Irritating Cool Invigorating Tingle Consumer Attribute Language  Looked for discrete sensory attributes within advertising & consumer reviews

6  Review of the panelists’ feet revealed obvious differences and the need for customized assessments.  Panelists self-evaluated feet for tactile conditions using known reference values, and panelists collaborated on visual attributes.  Individual baselines were established for heels, toes, and soles for each foot.  Panelists were given their profiles as references and could alter if conditions changed. Baseline Foot Assessment

7  Panelists refrain from use of lotions or treatment products on evaluation days  At start of session, one or more of the following is scheduled  Standardized wash and dry  Soaking or other treatment instructions  Rest period of ~15 minutes  Baseline profiles are verified for each foot and vary based on how foot is prepared and other conditions  Note: Feet are washed following evaluation session Site Preparation for Feet

8 Baseline Evaluation Sit still and sense CoolnessThe degree to which the skin feels less than room temperature Not cool  Very Look and evaluate Lines/ cracks The amount of narrow indented depressions in the skin None  Extreme Tap cleansed finger on site and evaluate StickinessThe degree to which finger adheres to skinNone  Extreme MoistnessThe degree to which skin feels wet/moistDry  Extreme Gently bend foot (or toes) up and down and evaluate TautnessThe degree the skin feels tightenedLoose  Very Stroke site lightly with cleansed fingers and evaluate RoughnessThe degree to which skin is non-uniformSmooth  Very SlipperinessThe ease of moving fingers across the skin.None  Extreme

9 Rubout Application: 0.2 cc of sample dispensed across panelist’s forefinger. Panelist uses 3 fingers to spread product over site using even pressure and a circular motion 3 - 5 Rubs *GrittinessThe amount of small, abrasive particles felt during rubbing None  Extreme WetnessThe amount of water perceived while rubbing None  Extreme Spread- ability The ease of moving the product over the skin Drag  Glide **Rubs to Absorbency The degree to which skin feels wet/moistDry  Extreme *Can add graininess, lumpiness or particle size ** Product type dictates maximum count for rubs, more for cosmetic products and less for OTC/pharmaceutical preparations

10 Afterfeel *Record all rubout attribute scores and evaluate at immediate, 5 and 10 minutes Repeat procedures for evaluation of coolness, lines/cracks, stickiness, moistness, tautness, roughness and slipperiness Tap cleansed finger on site and evaluate ThicknessThe amount of product or residue felt between fingertip and skin Thin  Extreme Stroke cleansed finger on site and evaluate OcclusionThe degree to which air passage to the skin is blocked None  Extreme Amount of Residue The amount of product remaining on the surface of the site None  Extreme Type of Residue List residue types: oily, waxy, greasy, silicone, soap film *Time periods selected on rate of product change in afterfeel, reasonable time between application and wearing footwear, or treatment instructions

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12  Data generated using this protocol can be analyzed using traditional univariate and multivariate techniques  Using a scaling system that approaches ratio data allows for “removing” the individual baseline profiles in the raw data via subtraction of the baseline from the sample profiles (Delta values)  Adjustment of baseline allow for changes in condition of the foot due to product use  Data analysis using the Delta values can minimize the noise from person to person so that smaller differences are detected reliably Analyzing Data for Foot Products

13  How can this protocol be used to support consumer research and product claims?  What additional attributes might have relevance for product developers? For marketers?  Are there biases that need to be addressed due to the negative emotions many people have concerning feet? Questions


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