If you’ve always kept your part on the same side, your hair has spent years being flattened into place.
Consider shifting your part to lift the hair away from the scalp and create volume right at the root of the problem. Try shifting your part to the other side, or zig-zagging it to add dimension.
Every time I style a new client's hair one of the first questions I ask them before I pick up my shears is where do you part your hair? This helps with how you may angle the fringe or place a highlight.
That being said if you think you are the type to play with your part all these things should be done in the salon with a center part. That way the color & cut will be OK no matter how crazy you get with messing around with your part.
Switch up that part & add a little spritz in that area of the Kenra Volume Dry Shampoo & trust me - you'll be giving hair that's become dead flat new life!