I have this rash on both of forearms and i've used poison ivy products to heal it but i still can't figure out what it can possibly be.?

See deramtologist: Poison ivy products could be barrier cream or weak antiinflammatory cream. It is impossible to tell what rash is from description and it is time after trial with otc products to seek prescription strength cream after proper diagnosis.

See your doctor: Symmetrical rashes on exposed surfaces such as forearms are often due to a contact dermatitis such as poison ivy. Once present, the rash can last a week or more before improving. If the rash is not resolving with over the counter treatments, i would suggest seeing your doctor.