Hello,
It looks like urethritis or inflammation of the urethra due to alcohol based
gel. Wash the areas several times with fresh water. Do not use
any cosmetic products at the sites. You can apply some calamine lotion at the rash as it will help in soothing the skin. Also wear cotton undergarments. Application of mild corticosteroid cream and oral antiinflammatories like ibuprofen/acetaminophen are also helpful.