New Petrolatum-Depositing Body Washes To Optimize In-Use Experience And Clinical Benefit
KD Ertel, PhD; HL Focht, BChE; DD Watson, BS; RA Bacon, BS; AL Newman, BS The Procter & Gamble Company, Cincinnati, OH
Introduction
There is a growing demand for personal care products that are ‘customized' to meet specific skin care needs, and personal cleansing products are no exception to this trend. Customization can be done at a conceptual level, e.g. fragrance or color, or it can involve modifications that yield different levels of a particular performance attribute, e.g. skin moisturization. One advantage to providing products that better meet individuals' performance expectations is that consumers and patients are more likely to use them. This can be important for personal cleansers such as petrolatum-depositing body washes that, unlike traditional cleansers, improve skin condition.
Objective
To review consumer research that led to the development of a new petrolatum-depositing body wash technology that incorporates and deposits different levels of moisturizer, and to compare the clinical performance of 3 versions of this new petrolatum-depositing body wash technology.
Methods
Consumer Understanding •A habits and practices study was conducted among 558 adult female consumers. •Subjects provided a range of information about their needs for body moisturization and their expectations for a moisturizing personal cleansing product (body wash). Deposition Testing •Trained panelists washed their forearms with the petrolatum-depositing body wash (PDBW) formulations following a prescribed procedure. •The amount of benefit agent deposited on the skin was determined analytically. Clinical Testing •Three versions of a new PDBW containing different levels of moisturizer were compared in a randomized, blinded leg wash study. A water only treatment was included as a control. •Thirty-five healthy adult females with dry leg skin had their legs washed once daily with each treatment for 7 days.1 •Expert visual evaluations were made at treatment baseline and 3 hours after washing on days 1 and 7. Stratum corneum hydration (Corneometer CM825) was measured at baseline and 3 hours after washing on day 7. •Data were analyzed using mixed model techniques adjusting for study design parameters.
Results
Habits and Practices Study •Ninety-seven percent of women in the habits and practices study stated that they wanted more moisturization from their personal cleansing product. These women fell into 3 groups in terms of self-perceived dry skin condition and various attributes related to dry skin condition (Figure 1). •These groups also have different expectations for a moisturizing body wash product's skin feel. Group 1 wants rapid absorption and no skin feel; Group 2 wants a somewhat perceivable skin feel; Group 3 wants a substantial skin feel. This signals a need for products that deposit different levels of benefit agent onto the skin during use. Deposition Testing •Three petrolatum-depositing body wash formulations were developed to meet identified needs and expectations for the amount of benefit agent (moisturuzer) deposited (Figure 2), which in turn influences the feeling left on skin. •Lather volume (quality) is not compromised with the new PDBW, as it can be for other moisturizing body washes that contain lipid benefit agents (Figure 3). Lather properties are an important contributor to the in-use experience and satisfaction. Clinical Testing •Clinical results show that the 3 versions of the new PDBW provide different magnitudes of dry skin improvement (Figure 4). These results parallel the level of moisturizer in the product and the amount deposited on the skin. •Similarly, the 3 versions of the PDBW provide different levels of stratum corneum hydration improvement (Figure 5). Taken together, the dry skin and hydration results show that the 3 PDBW versions provide different levels of skin moisturization.
Conclusion
Three versions of a new petrolatum-depositing body wash were developed to better meet consumers' needs and expectations for a moisturizing cleansing product. These new body washes incorporate high levels of moisturizer without compromising lather, a key contributor to in-use experience and satisfaction. Clinical testing confirms that the 3 body wash versions deliver different levels of moisturization. These body wash versions give consumers and patients options to customize their personal cleansing experience, and by doing so will help enhance the skin benefit for individuals with different body cleansing and moisturzation needs.
