I got a skin infection 3 weeks ago between eyebrows. the scab is coming off, and skin is missing and it is a deep wound. will it scar? what can i use?

Scar: Yes, you will scar. You need to keep the area from drying out and do not remove the scab until it is ready to fall off. There are silicone tapes and creams such as Mederma OTC gel. You may need to have resurfacing or additional treatment in the future to reduce the appearance of the mature scar. You are also advised to avoid direct sun exposure to minimize Inflammatory hyper pigmentation of scar.