DHA Sunless Tan Composition with Phosphorylated Peptide Stabilizer
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Solution Overview
Problem
Existing sunless tanning products are not stable and often turn yellow or orange when exposed to UV light, and they do not quickly impart a noticeable brown color, which can lead to premature color formation and inadequate sun protection.
Innovation Solution
A composition comprising a sunless tanning agent, such as dihydroxyacetone, combined with a phosphorylated peptide adjuvant, which maintains stability and rapidly produces a brownish/tan skin color without premature color formation when exposed to UV light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional self-tanning products with DHA are used, then a brownish/tan coloration is achieved, but the products turn yellow and/or orange after application especially when exposed to UV light
Solution Approach 1:
The patent introduces an intermediary substance (vitamin C derivative or ferulic acid) that mediates between DHA and UV light/skin components. This intermediary acts as a stabilizing agent that prevents direct harmful interactions between DHA and UV radiation or skin amino acids, thereby preventing unwanted yellow/orange color formation while maintaining the desired tan effect.
Solution Approach 2:
The patent changes the chemical parameters of the formulation by incorporating specific stabilizing agents (vitamin C derivatives or ferulic acid) that alter the chemical environment. This parameter change stabilizes DHA's chemical properties, preventing its degradation into unwanted colored compounds when exposed to UV light, thus maintaining color stability.
2Productivity
If sunless tanning products are formulated to quickly impart brown color, then consumer satisfaction improves, but premature color formation occurs
Solution Approach 1:
The stabilizing agents (vitamin C derivatives or ferulic acid) serve as intermediaries that control the rate and nature of color formation. They modulate the reaction between DHA and skin components, enabling rapid development of desirable brown color while preventing premature formation of unwanted yellow/orange hues through their stabilizing effect.
Solution Approach 2:
The patent modifies the chemical parameters of the tanning system by adding stabilizing agents that alter the reaction kinetics. These agents enable faster formation of desired brown pigments while controlling the chemical pathways to prevent premature formation of unwanted colors, thus improving both productivity and reliability.
3Reliability
If sunless tanning products do not prevent premature color formation, then consumers may bask in the sun seeking tan, but UV protection is inadequate
Solution Approach 1:
The vitamin C derivative or ferulic acid acts as a protective intermediary that stabilizes DHA against UV-induced degradation. By preventing premature color formation, the composition reduces the incentive for consumers to seek additional sun exposure, thereby indirectly reducing UV exposure risk while maintaining reliable color stability.
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 composition provides a stable and effective sunless tan within a consumer acceptable time frame, maintaining optical stability and preventing unwanted color changes, while offering protection from UV rays.
Implementation Method 1
DHA, after application, is believed to exert its effect through interactions between its hydroxyl groups and the amino groups of amino acids and peptides naturally occurring in the hydrolipid pellicle and first layers of the stratum corneum of the skin. These so-called Maillard reactions are believed to lead to formation of brown pigments in the skin
Implementation Method 2
Many sunless tanning products available on the market are not stable in that they turn a yellow and/or orange color after application, especially when exposed to UV light
Data Source
AI summary
A composition and method for imparting a sunless tan to skin is described. The composition and method make use of a sunless tanning agent like dihydroxyacetone in combination with an adjuvant such as a phosphorylated peptide.