What is thin skin? As we age, multiple reasons can cause the skin to thin, and when this occurs, it is most visible on your face, arms, and hands. Symptoms include thin, dry, or transparent skin as well as skin that easily tears, bleeds, or bruises. The reasons for thinning skin include collagen loss, UV exposure, medication use, and poor lifestyle habits. Thinning skin, also known as “fragile skin,” can affect your long-term health, so it’s imperative that you actively take steps to protect the health of your skin now. That means never skipping SPF, eating clean, and being aware of your daily habits.