Segments Sponsored by
Today’s ingredients are masters at communicating with cells, fighting photoaging and even repairing DNA with highly evolved defensive enzymes culled from the sea. They can restore youth to aged cells, fade dark circles under eyes and even brighten the mark of melasma.
Not many single actives can so convincingly restore aging skin to a visibly younger-looking texture while stimulating collagen production as the retinoid family. Ever since Albert Kligman, MD, began his landmark research with retinoids in the 1960s, retinol has been widely regarded as the gold standard of anti-aging topicals for its crowning distinction of being able to regulate, rejuvenate and renew skin cells.
Yet, for all the dermatologists lauding this precious commodity’s performance in aging skin, many people are quitting their vitamin A regimens as soon as the redness, flakiness and irritation surface. That’s why when Barnet Products Corporation started supplying a soy-based active complex known as Allosteris that improves the skin’s reception to signaling molecules, including retinol and peptides, it was a welcome addition to the industry.
Using a 0.5% Allosteris concentration, researchers have been able to reduce the retinol percentage in a formulation to as little as 0.03% and achieve a 22% increase in skin cell replacement, according to research from Barnet. By using less retinol, product developers and formulators are now able to achieve the same effect of the active while reducing the irritation and expense, according to Barnet product information.
Even independent of other actives, Allosteris proves its worth. At a 1% concentration, Barnet claims this ingredient has demonstrated an ability to increase gene expression in keratinocytes and modulate fibroblasts. The company also claims Allosteris helps increase hydration by 33% and decrease wrinkles by 56%, in addition to improving clarity and firmness—all without the irritating side effects of retinol.
Several years ago, stem cell manufacturers stirred the proverbial kettle with several new ingredients culled from plant stem cells. By definition, the very idea of stem cells is intriguing, with their blank canvases of undifferentiated cells ready to inscribe the next generation of healthy cell division. The pickings are plentiful. From edelweiss and echinacea to gotu kola, plant stem cells perform a range of functions, including reducing wrinkles, strengthening immunity and even fighting acne.
For photoaging, buddleja davidii stem cells—and their active constituent, verbascoside—have proven worthy contenders in protecting the skin by helping inhibit inflammation, preserve collagen and fight free radical damage. Sederma research demonstrates daily use of a 2% concentration of its Buddleja Stems GX protects the skin against UVA damage, improves skin structure and fights free radicals. Don’t be surprised if you see this stem cell budding in sunscreens and moisturizers soon.
Citrustem from Provital uses stem cells from oranges to help organize the inner structure of the skin and improve elasticity and cell adhesion. According to Provital, whose ingredients are distributed in North America by Centerchem, a study evaluating the effect of 0.1% Citrustem on 64 genes demonstrated this sustainable active’s ability to increase the expression level of collagen VI, elastin and ADAMTS2, a gene that codes the conversion of N-propeptides of procollagen into collagen.
Citrustem also has demonstrated in vitro efficacy in stimulating a proliferation of fibroblasts to increase collagen synthesis and other key elements of the extracellular matrix. The fruit of this innovation may also help the skin bear a quick recovery of the elasticity it once knew years ago.
While stem cells have attracted widespread attention for their promise to restore the skin-differentiation function to aging cells, Progeline, a three-amino acid peptide biomimetic, helps modulate a key marker of cell senescence in the absence of stem cells to significantly decrease sagging, slackness and wrinkles in skin. As cells age, they lose their ability to divide; yet they remain active, often generating collagen- and elastin-degrading metalloproteinases (MMPs). Senescent cells also are accompanied by an increased level of progerin, a toxic protein that can lead to DNA damage and contribute greatly to signs of aging.
Progeline, from Lucas Meyer Cosmetics, acts as an enzyme-inhibitor to decrease progerin synthesis and improve the appearance of aging skin. In a placebo-controlled study of 13 volunteers ages 54–66, a cream containing 2% Progeline resulted in a 20% increase in firmness and a 21% increase in elasticity when applied twice daily for 28 days, according to Lucas Meyer Cosmetics.
As the skin ages, the epidermis thins, the dermis becomes less compact and the basement membrane of the skin begins to flatten. In vitro data has demonstrated that Merck’s RonaCare Cyclopeptide-5 upregulates the genes that stimulate growth factors and proteins in the basement membrane. As a result, the glycoprotein laminin IV better binds to cell surface receptors to tighten the connection between the basement membrane and adjacent cell layers. According to Merck, Cyclopeptide-5 has the ability to downregulate the genes responsible for stimulating the MMP enzymes that degrade collagen and elastin.
There are many skin brighteners on the market, but not all can claim to perform like hydroquinone. While hydroquinone is a favorite skin lightener among physicians, it’s also a controversial one known for its reputed toxicity. Chromabright offers a synthetic molecule that brightens the skin without the cytotoxicity or irritation linked to hydroquinone. It works similarly to brighteners such as kojic acid, which inhibit tyrosinase, an enzyme vital to converting melanin into pigment in the skin.
In addition to its impressive clinical results, Chromabright offers a safe profile, high stability in formulations and a photoprotective effect on human skin cells. According to Chromabright manufacturer Lipotec, in an in vitro study comparing ingredients’ effect on inhibiting the production of melanin, Chromabright outperformed arbutin, magnesium ascorbyl phosphate (MAP) and kojic acid, and came within a few points of hydroquinine’s inhibition percentage.