Fine Lines, Wrinkles & Texture Research Update - P&G Beauty ...
Fine Lines, Wrinkles & Texture Research Update - P&G Beauty ...
Fine Lines, Wrinkles & Texture Research Update - P&G Beauty ...
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What Works<br />
In recent years, science has uncovered<br />
a great deal about how to prevent<br />
extrinsic skin aging as well as<br />
the anti-aging benefi ts of retinoids,<br />
niacinamide and peptides.<br />
Prevention of Extrinsic Skin Aging<br />
Everyone has heard the old adage<br />
that an ounce of prevention equals<br />
a pound of cure, but in the arena of<br />
skin science, it is only recently that<br />
we’ve gained a clearer understanding<br />
of what should be prevented and how.<br />
Th anks to research advancements,<br />
we now know both the consequences<br />
of extrinsic factors and what can be<br />
done to avoid, or at least limit, their<br />
deleterious eff ects.<br />
In the area of UV protection,<br />
increased understanding of the role<br />
of UVA rays in both cancer and skin<br />
aging has led to stronger emphasis on<br />
“broad spectrum” coverage that protects<br />
against UVA and UVB rays, as<br />
well as the introduction of improved<br />
UVA fi lters. Th is progress is continuing<br />
to be built upon through<br />
enhanced technologies that deliver<br />
the protection consumers need along<br />
with the product aesthetics we know<br />
improve sunscreen compliance. 33<br />
Progress has also been made in better<br />
understanding the role of antioxidants<br />
in inhibiting reactive oxygen<br />
species (ROS) formation and thereby<br />
interrupting free radical chain propa-<br />
gation, a major pathway for UV- and<br />
other environmentally-induced skin<br />
damage. In a recent study, P&G<br />
<strong>Beauty</strong> researchers 34 used fl uorescence<br />
microscopy to visualize and<br />
quantify the protective eff ect of topically-applied<br />
antioxidants for inhibiting<br />
ROS formation across several<br />
sources of oxidative stressors, including<br />
UV light, automotive emissions<br />
and ozone. Th e effi cacy of sunscreen<br />
alone and in combination with antioxidants<br />
was also evaluated.<br />
Key fi ndings include:<br />
• Topically applied antioxidant<br />
formulations were eff ective at<br />
signifi cantly inhibiting free radical<br />
formation, with reductions of<br />
19–88% versus antioxidant-free<br />
vehicle controls observed against<br />
three oxidative stressors.<br />
• An antioxidant/SPF 15 formulation<br />
gave signifi cantly reduced ROS<br />
(91% reduction) versus either<br />
antioxidant-only (88% reduction)<br />
or SPF-only (61% reduction) controls<br />
(p