The easiest wig to detangle is the one you never let mat. Tangle prevention is mostly friction control.
Watch the nape
The nape rubs against clothing all day. Brush it gently during wear and avoid rough collars when possible.
Store it with shape
Do not toss long wigs into a drawer. Detangle, loosely braid if needed, and store on a stand or in a satin bag.
Use less product
Too much spray, oil, or conditioner attracts dust and makes fibers clump. Use wig-safe products sparingly.
Bottom line
Keep a wig from tangling by reducing friction, brushing small knots early, and storing it neatly every time.