Self-Tanning Compositions With Sphingolipids for Even, Longer-Lasting Tone
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Solution Overview
Problem
Existing self-tanning agents do not effectively enhance skin tanning without causing UV-damage reactions and have side effects like formaldehyde formation, and they do not provide long-lasting, even skin tone.
Innovation Solution
Incorporating certain sphingolipids and sphingoid bases into self-tanning agents to boost tanning effects, reduce UV-damage, and stabilize the formulation, while also strengthening the skin barrier and modulating the skin microbiome.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-tanning agents are applied to enhance skin tanning, then the tanning effect is improved, but UV-damage reactions and side effects like formaldehyde formation occur
Solution Approach 1:
Sphingolipids act as intermediary substances that enhance the tanning effect of self-tanning agents while reducing harmful side effects. The patent discovers that sphingolipids modulate the activity of self-tanning agents like DHA, boosting the desired tanning effect while simultaneously reducing formaldehyde formation and UV-damage reactions, thus serving as a beneficial mediator between the active ingredient and skin.
Solution Approach 2:
The invention changes the chemical parameters of the tanning system by introducing sphingolipids with specific molecular structures (general formula I with varying R1 groups, X linkages, and n values). These structural parameter changes in sphingolipids allow optimization of the tanning effect while controlling harmful byproduct formation, enabling fine-tuning of the chemical reactions involved.
2Productivity
If self-tanning agents are applied to achieve tanning, then the tanning effect is improved, but the skin tone becomes uneven and yellow
Solution Approach 1:
Sphingolipids serve as modulating intermediaries that control the distribution and reaction of self-tanning agents on the skin. The patent demonstrates that sphingolipids promote more uniform penetration and reaction of tanning agents, resulting in even skin tone without excessive yellowing, thus acting as a precision-enhancing intermediary.
3Productivity
If self-tanning agents are applied to achieve tanning, then the initial tanning effect is improved, but the duration of the tanning effect is short
Solution Approach 1:
The patent discovers that sphingolipids enable continuous and sustained tanning action by modulating the gradual release and activity of self-tanning agents. The combination maintains a steady state of tanning agent activity on the skin, extending the duration of the tanning effect from several days to over a week, thus achieving continuity of useful action.
4Productivity
If higher concentrations of self-tanning molecules like DHA are used to enhance tanning effect, then the tanning effect is improved, but side effects like formaldehyde formation increase
Solution Approach 1:
The invention converts the potentially harmful high-concentration self-tanning agent system into a beneficial one by introducing sphingolipids. These lipids modulate the chemical reactions to reduce formaldehyde formation while maintaining or enhancing the tanning effect, thus turning a harmful high-concentration system into a safe and effective one.
Data Source
AI summary
A composition has at least one self tanning agent and certain sphingolipids and/or certain sphingoid bases. Cosmetic formulations having the composition with at least one self tanning agent, certain sphingolipids and/or certain sphingoid bases enhance a self tanning effect of a self tanning agent or find application in cosmetic products for tanning of a human skin.