If someone did a gram of cocaine over a 2 month period(bumps) and the last time they did it was in mid September, can they pass a hair test after 4 months clean. This person also has gotten multiple haircuts since September

After last use, cocaine or its metabolites typically can show up on a blood or saliva test for up to 2 days, a urine test for up to 3 days, and a hair test for months to years. A heavy user can test positive on a urine test for up to 2 weeks. stays in a person’s system. But other factors can influence how long it stays in someone’s body, such as metabolism, weight, dose, and frequency of use. Drinking while taking cocaine may also slow its elimination from the body.
But that would only be hair that existed when you did the drug. Not hair that grew months after
From my understanding it can only detect further back if they test hair that was there or in the process of growing during your drug intake.You might be fukked...the standard is three months but it can still detect the drugs from further back.