To avoid causing hair thinning through hair styling, avoid hair tools and treatments that get extremely hot. Curling irons, curlers and hair dryers, for instance, can all damage hair and cause thinning, and can cause the skin on your scalp to become dry or overly oily, which can affect your chances of developing hair issues. Use lower heat settings or avoid heated hair styling tools completely to prevent heat-related hair thinning.
Minimizing your exposure to toxins and other pollutants can keep your hair healthy and lush. Hair health is intimately tied in with your body's overall health, and exposure to toxins and generally unhealthy substances will increase your odds of hair loss. For example, avoid breathing car exhaust fumes when in traffic and always wear gloves if you handle toxic chemicals so that they aren't absorbed through your skin.