results from environmental exposures that engender cell damage, including UV light, infrared and radiation exposure, air pollution, smoking, tanning beds, alcohol and drug usage, stress, and poor diet.
6 The clinical features of extrinsic aging
include skin dryness, wrinkling, laxity, decreased elasticity with elastosis, skin fragility and thinning, stellate pseudoscars, freckling, lentigines and seborrheic keratosis.
Skin aging can be divided into intrinsic or chronologic aging, which is the process of senescence that affects all body organs, and extrinsic aging
(photoaging), which occurs because of exposure to environmental factors.
Free radical formation, inflammation and subsequent aging, isn't only an inside job--air pollution impacts extrinsic aging
and the skin in general.
, on the other hand, is produced by factors outside the body such as weather, ultraviolet radiation, and lifestyle.
Once injected into the skin and underlying tissues these activated cells start to repair the damage done by years of intrinsic and extrinsic aging
They found no significant difference between the groups in signs of extrinsic aging
, which are attributed primarily to sun exposure, such as coarse wrinkles and sunburn freckles.
Intrinsic, or chronological, aging is different from extrinsic aging
, which is caused primarily by sun exposure.
Visitors to the company's Eucerin brand booth could step into the simulator, which animates the facial aging process, examining intrinsic and extrinsic aging
factors on the face.
It is well established that there is an association between airborne particles and extrinsic aging
, making airborne particles the latest target for anti-aging product formulators.
Skin aging is a complex biological process that is a consequence of both intrinsic or genetically programmed aging that occur with time, and extrinsic aging
caused by environmental factors .
7) An effective antioxidant, it protects skin from intrinsic and extrinsic aging