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Updated: Jun 14, 2026
12:37
Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
Published on: September 7, 2013
Dose-dependent progressive sunscreens. A new strategy for photoprotection?
Adaya Gallardo1, Jordi Teixidó, Ricardo Miralles
1Grup d'Enginyeria Molecular, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain.
Summary
New progressive sunscreens generate UV protection "on demand" through photochemical transformation. Encapsulated in silica, these advanced sunscreens offer adaptive, enhanced safety, and improved environmental impact for effective sun protection.
Area of Science:
- Photochemistry
- Materials Science
- Dermatology
Background:
- Conventional sunscreens block UV radiation but can be less effective with increasing exposure.
- There is a need for sunscreens that provide adaptive and on-demand UV protection.
Purpose of the Study:
- To develop a new generation of UV filters based on photochemical transformation.
- To enhance sunscreen efficacy, safety, and environmental profile through innovative formulation.
Main Methods:
- Utilizing photochemical transformation of precursors upon sunlight exposure to generate broadband UV filters.
- Encapsulating precursors and transformation products within silica particles.
Main Results:
- Progressive sunscreens are generated "on demand", adapting protection levels to radiation intensity.
- Higher protection is afforded to more exposed skin areas.
- UV blocking capacity increases proportionally with escalating radiation dose.
Conclusions:
- This novel approach offers dynamic and targeted UV protection, surpassing traditional methods.
- Silica encapsulation improves sunscreen efficacy, safety, and reduces environmental impact.
- These advanced sunscreens provide superior, adaptive photoprotection.
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