Self-Tanning Composition with Vitamin B3 for Even Color
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Solution Overview
Problem
Existing self-tanning cosmetic compositions face challenges in achieving even and durable skin color due to rapid reaction of color enhancers with self-tanning agents, leading to surface reactions and limited penetration, as well as safety concerns with certain materials.
Innovation Solution
A cosmetic composition combining a water-soluble vitamin B3 compound and an alpha-hydroxyaldehyde self-tanning agent, which synergistically react to enhance skin coloration, increasing the reactivity spectrum and allowing deeper penetration for a more even and durable tan with reduced irritancy and toxicological potential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If color enhancers are used to supplement amino acids in self-tanning compositions, then skin coloration evenness is improved, but the reaction occurs too quickly at the skin surface, preventing penetration and reducing durability
Solution Approach 1:
The patent changes the chemical parameters of the color enhancer by selecting specific amino acids with controlled reactivity toward DHA. By choosing amino acids that react at optimized rates, the formulation achieves both even color distribution and prolonged durability, resolving the contradiction between reaction speed and penetration depth.
2Reliability
If certain color enhancer materials are used to increase skin pigmentation, then color enhancement is achieved, but safety concerns and toxicological potential prevent widespread use
Solution Approach 1:
The patent employs amino acids that are naturally present in the skin and are biocompatible, replacing potentially harmful color enhancers. These natural amino acids provide effective color enhancement without the safety concerns associated with synthetic alternatives, eliminating toxicological risks while maintaining efficacy.
3Productivity
If self-tanning agents react rapidly with color enhancers, then color development is accelerated, but penetration into the cutaneous layer is limited, resulting in surface-only reactions that wash off
Solution Approach 1:
The patent optimizes the reactivity parameters by selecting amino acids with specific chemical properties that balance reaction speed and penetration capability. The chosen amino acids react sufficiently fast to develop color efficiently but slowly enough to allow cutaneous layer penetration, ensuring the tan is both rapid-developing and long-lasting.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combination provides improved, controlled, and enhanced skin coloration with reduced inter- and intra-individual variation, increasing the durability and evenness of the tan while minimizing side effects.
Implementation Method 1
Self-tanning agents are believed to generate skin colouration by reacting with amino acids present in the skin to form coloured chromophores
Implementation Method 2
allowing the self-tanning agents to penetrate the cutaneous layer
Data Source
AI summary
The method of imparting color to skin comprising applying to the skin a cosmetic compositions comprising an alpha-hydroxyaldehyde self-tanning agent and a water-soluble vitamin B3 compound as a self-tanning composition are provided. The cosmetic compositions are useful for imparting a natural, even and durable tan to the skin when topically applied.