Yes since the red marks are not scars and just marks the red marks from your acne will eventually fade away and go completely away overtime.
The time it takes for the red marks from acne to fade away is between 2 to 4 months depending on the persons skin.
You can help the red marks from acne go away by applying some Aloe Vera Gel, Potato Juice, Lemon Juice, Coconut Oil or baking soda to the red marks and it will help them fade away faster.