Photoactive Microalgae Extracts for Red-Light Collagen Stimulation

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Solution Overview

Problem

Existing anti-aging and anti-wrinkle cosmetic treatments do not effectively stimulate collagen synthesis and reduce oxidative stress in the skin, and healing processes are not adequately promoted by conventional methods.

Innovation Solution

A cosmetic method involving the application of photoactive microalgae extracts, such as Dunaliella salina and Tetraselmis suecica, followed by exposure to red light at 625-670 nm, particularly 645 nm, to enhance the production of reactive oxygen species (ROS) and nitric oxide, thereby increasing collagen synthesis and reducing pro-inflammatory cytokines and metalloproteinases.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional anti-aging cosmetic treatments are applied, then skin care is provided, but collagen synthesis is not effectively stimulated and oxidative stress is not reduced

Engineering Contradiction:
Improveeffectiveness of anti-aging treatmentVSAvoidcollagen synthesis rate
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent changes the oxidation state parameter of the microalgae extracts from reduced to oxidized form through light exposure. This parameter change activates the extracts to stimulate collagen synthesis and reduce oxidative stress, resolving the contradiction between providing skin care and effectively stimulating collagen production

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent converts the harmful effect of oxidative stress into a beneficial effect by using controlled oxidation of microalgae extracts. The oxidized extracts then act as antioxidants in the skin, reducing oxidative stress and stimulating collagen synthesis, thus turning potential harm into benefit

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Reliability

If conventional cosmetic treatments are applied, then skin healing is supported, but the healing process is not adequately promoted

Engineering Contradiction:
Improvehealing supportVSAvoidhealing rate
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The patent applies parameter change by oxidizing the microalgae extracts through light exposure, which activates their healing properties. The oxidized extracts then accelerate the skin healing process while providing reliable healing support, resolving the contradiction between supporting healing and adequately promoting the healing process

Inventive Principle:
Principle #35Parameter changes

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 method significantly enhances skin elasticity, reduces wrinkles, and promotes healing by stimulating collagen production and cell regeneration, as demonstrated by clinical studies on 30 subjects.

Implementation Method 1

exposing the area to which said composition has been applied to light... exposure to red light at 625-670 nm, particularly 645 nm, to enhance the production of reactive oxygen species (ROS)

Methodology Applied
Scientific EffectPhotooxidation: Photo-oxidation

Data Source

PatentEP3962447B1Cosmetic care method based on photoactive extracts of microalgae
Publication Date: 2025.10.08 LABES DANJOU
  • EP3962447B1 patent drawingFigure 1
  • EP3962447B1 patent drawingFigure 2A~2C
  • EP3962447B1 patent drawingFigure 3

AI summary

The present invention concerns a cosmetic care method for the skin comprising the steps of applying, to the skin, a cosmetic composition comprising photoactive extracts of at least one microalgae, and exposing the area to which the composition has been applied to light. The invention also comprises a device for cosmetic care according to the method, and a kit comprising a cosmetic composition comprising photoactive extracts of at least one microalgae and a lighting device according to the invention. The invention finally comprises the use of the device according to the invention for an anti-ageing and/or anti-wrinkle treatment and/or a treatment promoting the healing of the skin area.