The Birth of a Wrinkle

In the dermis, UV radiation causes collagen to break down at a higher rate than with just chronological aging. Sunlight damages collagen fibers and causes the accumulation of abnormal elastin. Enzymes that normally remodel sun-injured skin actually break down collagen. When the skin repeats this imperfect rebuilding process over and over, wrinkles develop.

Posted on August 6, 2015 .