Methods for improving skin quality using rinse-off personal care compositions with variable amounts of hydrophobic benefit agents
A technology for improving skin and personal care, applied to skin care preparations, cosmetics, pharmaceutical formulations, etc., which can solve the problems of consumers reducing, suspending or even giving up personal care products
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[0080] According to various embodiments, the method comprises the step of applying the composition to the skin of the user once a day for a period of time which in any order includes an optimal period in which the ratio of foaming agent to hydrophobic benefit agent is high. An experience phase of , characterized by maximization of lather and fragrance delivery, and a conditioning phase in which the ratio of foaming agent to hydrophobic benefit agent is low, where the deposition of hydrophobic benefit agent is maximized as feature. In some embodiments, the sequence of phases is an experience phase followed by a conditioning phase. In other embodiments, the order of the phases is a conditioning phase followed by an experience phase. In other embodiments, the sequence of phases is a super experience phase, then a conditioning phase, followed by a super experience phase. It is understood that in some embodiments, each benefit agent is present in all stages, and that additional b...
Embodiment 1
[0133] Example 1: Personal Care Composition Characteristics and Benefits
[0134] Table 1 identifies several factors obtained from chats to describe consumer-described needs or demands related to rinse-off personal care compositions. As described herein, one aspect of effective delivery of conditioning benefits to users of such personal care compositions is continued use of the product to enable sufficient deposition of the hydrophobic benefit agent. Often, consumers tend to discontinue or discontinue use of products that do not provide an optimal experience, despite the fact that such products may deliver conditioning benefits. The table describes aspects or factors associated with the user experience and lasting benefit expected from a rinse-off product to ensure continued use by the consumer.
[0135] Table 1
[0136]
Embodiment 2
[0137] Example 2: Clinical Study: Skin Mark Response Assessment
[0138] A study was conducted using a panel of different personal care compositions and water to assess responses to a range of skin markers. A leg wash study was used to assess the beneficial effects of personal care products on dry skin of the legs. Design leg washing studies to estimate consumer-relevant exposure levels, such as washing frequency. The technique used for this study was a modification of a published method (Ertel et al., 1999).
[0139] The study included products with a variable lipid profile, where the ratio of surfactant to lipid (foaming agent to hydrophobic benefit agent) was varied continuously between three stages as described in this disclosure. The study also included commercially available products with a constant lipid profile. As described further below, the compositions used in the study included Inventive Example B and Comparative Example C, as shown in Table 5 and related Tab...
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