Lieve Declercq
Chief Scientific Advisor and Vice President
Proya Cosmetics
Biography
Dr. Lieve Declercq is Chief Scientific Advisor to PROYA Cosmetics and Vice President of the PROYA Europe Innovation Center in Paris, where she drives the integration of European scientific excellence and innovation into PROYA’s product development strategy. Before joining PROYA, she spent over two decades at The Estée Lauder Companies, ultimately serving as Vice President of Basic Science Research and Advanced Technologies for Europe and Asia. With a strong scientific foundation and deep industry insight, she supports PROYA in elevating product performance and advancing science driven skincare for China’s highly sophisticated beauty market.
Conference
Day 2
Session 3: Hydration evaluation, what's new?
Multi-Dimensional Strategies to Improve Skin Hydration: Barrier Restoration, Gentle Anti-Aging and Antioxidant-Glycation Across Three Cosmetic Systems
In China’s fast growing dermo cosmetic market, hydration is increasingly viewed as the biological anchor for comprehensive skin health. Modern consumers expect moisturizing products to simultaneously enhance barrier robustness, deliver gentle anti aging benefits, or protect against oxidative and glycation driven damage. Proya has developed three complementary systems that illustrate a multi dimensional strategy to improve hydration through barrier repair, controlled retinoid activity, and cellular level defense mechanisms.
The Ruby Series demonstrates how hydration intersects with gentle anti aging. Its “dual A + dual peptide” technology supports collagen quality, helping preserve firmness and moisture retention, while optimized retinoid–ceramide–NAG combinations promote lipid replenishment with minimized irritation.
The Double Effect Brightening Serum highlights hydration’s link to metabolic balance. Its NOX AGE complex mitigates oxidative stress and glycation while supporting ATP levels, SOD activity, autophagy, and melatonin synthesis—pathways essential for maintaining optimal water balance and cellular recovery.
Proya’s Original Repair Cream addresses hydration through barrier restoration. Using lactobacillus/soy ferment filtrate, bacillus ferment, and a multi ceramide complex, it boosts key proteins including filaggrin, loricrin, and TGM1, reduces inflammation, and improves dermal epidermal junction structure—yielding more resilient, longer lasting moisturization.
Together, these systems reflect Proya’s integrated vision of hydration as a dynamic, biologically interconnected process that drives comprehensive skin health.