Tuesday, July 02, 2013
[This review of Dr. Dennis Gross Hydra-Pure Vitamin C Brightening Serum began yesterday.]
Many studies in humans have shown that a lipid-silica delivery system (as is used in Dr. Dennis Gross Hydra-Pure Vitamin C Brightening Serum) enhances the penetration and anti-aging effectiveness of the topical antioxidant flavonoid Quercetin.
This delivery system also has a sustained release effect which endures for 24 hours after the initial free radical elimination.
"The enhancing effect on permeation [is] more marked in the deepest horny layer[s]" of the skin. (Comparative Evaluation of the Effect of Permeation Enhancers, Lipid Nanoparticles and Colloidal Silica on in vivo Human Skin Penetration of Quercetin, Skin Pharmacology and Physiology, April 2013)
Many studies have demonstrated anti-aging and UV-protective effects of Quercetin. Quercetin not only stops telomere shortening which leads to cell death, but also reverses past damage including age spots and some scars. It is theorized to work by rejuvenating the cell fibroblast production and maintenance system.
"Quercetin caprylate [is] a proteasome activator with anti-oxidant properties that consequently influence cellular lifespan, survival and viability of ... human fibroblasts. Moreover, when these compounds are supplemented to already senescent fibroblasts, a rejuvenating effect is observed. Finally, we show that these compounds promote physiological alterations when applied to cells (i.e. whitening effect)." (Anti-ageing and rejuvenating effects of quercetin, Experimental Gerontology, Oct, 2010)
Ingredients: Cyclopentasiloxane, Cyclomethicone, Ascorbic Acid, Dimethicone Crosspolymer, Peg/Ppg-18/18 Dimethicone, Squalane, Sodium Ascorbyl Phosphate, Ascorbyl Palmitate, Quercetin Caprylate, Tocopheryl Acetate, Linoleic Acid, Sodium Chondroitin Sulfate, Sodium Hyaluronate, Salicylic Acid, Lactic Acid, Palmitoyl Oligopeptide, Pueraria Lobata Root Extract, Salix Nigra (Willow) Bark Extract, Acrylates/Carbamate Copolymer, Butylene Glycol, Panthenol, Pentasodium Pentetate, Phytic Acid, Potassium Citrate, Potassium Gluconate, Tetrasodium Edta, Purified Water (Aqua Purificata), Phenoxyethanol.