There are a few sprays that leave a semi-permanent color spray on the target. It's effective to target the offender and id him later, but, then again, not beyond a few feet or a few hours. It does wash off.
But there's one more step you can buy at the local supermarket or hardware store to prepare yourself for an attack.
Buy a can of Wasp/Hornet spray. It's about $5 and will pitch it's content up to twenty feet, spraying wider as it goes. It will cripple an attacker. Then call the police after he's down and call 911 to admin FirstAid.
First aid: If on skin or clothing, take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a poison control center or doctor for treatment advice. If swallowed, immediately call a poison control center or doctor. Do not induce vomiting unless told to do so by a poison control center or doctor. Do not give any liquid to the person. Do not give anything by mouth to an unconscious person. Have the product container or label with you when calling a poison control center or doctor, or going for treatment. You may also contact 800-558- 5252 for emergency medical treatment information. Note to physician: contains petroleum distillate—vomiting may cause aspiration pneumonia.
The good news is that you've crippled your attacker.
